Science Video Browse

Mars: warm-season flows on a slope in Newton Crater on Mars, from Mar Reconnaissance Orbiter

Observe chimpanzees' social interactions in their rainforest, grassland, and woodland habitats

Watch a female deer give birth to, feed, groom, and nurture a pair of fawns in their natural habitat

Compare Homo habilis, H. erectus, H. neanderthalensis, and H. sapiens to determine the first human species

Learn about the explosion of a possible comet or asteroid over the Siberian taiga

Apollo: astronauts in the lunar rover

Follow water in its many forms from glaciers and clouds to freshwater rivers and saltwater oceans

A simulation demonstrating how Rayleigh waves traverse the free surface of elastic solids such as Earth

Discover how the volcanic island of Surtsey formed for ash and lava erupting from the seafloor near Iceland

bumblebee: underground nest

Mars Reconnaissance Orbiter: polar ice cap

polar bear: mother and cubs

P waves travel as elastic seismic motions at the highest speeds resulting in the compression and expansion of the transmitting media

Witness a combustion reaction between oxygen and cellulose to produce water, carbon dioxide, and carbon

Discover the differences between Louis Dollo's former reconstruction and David Norman's current reconstruction of Iguanodon

Uncover interesting tidbits about the flightless kakapo, the African gray parrot, and blue and gold macaws

Delve into a chloroplast's stroma to watch adenosine triphosphate provide energy for sugar-producing reactions

overview of photosynthesis

Examine how Falco peregrinus uses controlled falls and outstretched talons to prey on pigeons and ducks

nitrogen fixation

fly agaric

SpaceX

Helioseismic and Magnetic Imager: dopplergram showing the velocity of solar material in the photosphere

asteroid; Earth impact hazard

galaxy

Follow the development of rice-paddy fish from fertilization to hatching in a laboratory setting

Study a prairie dog colony, breeding habits, and response to predators in the North American plains

Observe in slow motion North American toads' power generated by their hind legs

Go inside a tropical cyclone's eye to learn how low-pressure cores exist amid cloud walls and high winds

American crocodile

Observe how the xylem carries food up from the roots and how the phloem transports food down from the leaves

Discern the difference between heat and temperature and review the three types of heat transfer

continental drift

Witness playful gliding of river otter fishing in freshly thawed North American river

Watch a Herpestes mongoose attack and kill its common prey, a venomous Asian cobra

Magdalena Island: sanctuary for Magellanic penguins

Examine the differences in structure and function of endoskeletons and exoskeletons

Learn how chemical reactions are balanced through the metaphor of making change

spring flowers

plate tectonics

space shuttle: Takeoff and landing

Observe silky anteaters navigate rainforest treetops with their prehensile tails

parsley

bay leaf

stability of orbits

Study predation habits of queen triggerfish against a sea urchin's defensive tactics

Investigate how muscles in the body wall and small bristles enable earthworms to move through soil

Discern between monocotyledons with single-leaf seed sprouts and eudicotyledons with two-leaf seed sprouts

See how evolutions in plants from bryophytes to angiosperms provide habitats and food sources for organisms

Watch buildings crumble during the volcanic eruption of Italy's Mount Vesuvius in 1944

Lemaître, Georges; big bang

Discern between self-sustaining autotrophs and consumer heterotrophs and find their places in the food chain

Take a microscopic look at how a eukaryotic flagellate's flagellum propels the organism through water

Watch a citrus farmer graft a scion onto a sour orange tree's rootstock to produce crops of sweet oranges

Watch green sea turtles hatch from eggs and scramble to the ocean to avoid predators

Observe flocks of masked, red-footed, and blue-footed booby species common to the Galapagos coasts

Witness a group of mushrooms growing underwater and revealing gills on their caps' undersides

infrared source; dark sky

Sedna: location of "Sedna," in relation to the rest of the solar system

Track the discovery of dinosaurs from 7th-century griffin legends to Richard Owen's coining of Dinosauria

dog; chemoreception

Discover how genetic material is exchanged between bacteria via conjugation and transduction

Consider whether the continuous band of membranous tissue around humans' intestines should be deemed an organ

Study spore-producing liverworts and anatomical features such as gametes, thalli, and rhizoids

sand and beach formation

plant-pollinator interactions

white shark

Zoom out from Earth's solar system to the Milky Way Galaxy, the Local Group, and beyond

Is light pollution really pollution?

light pollution

Watch clouds form over the Pacific Ocean and waterfalls down Mount Waialeale on Hawaiian island Kauai

See why the red panda is classified as the only member of the Ailuridae family

Observe a Pika forage for food in mountainous terrain and deliver a litter of fully dependent hairless pups

shark

Study a variety of exotic shorthair cat species from the Egyptian mau to the Japanese bobtail

See how bacteria recycle forest litter into water, carbon dioxide, nitrogen, and soil minerals

botany; carbon sequestration

Observe time-lapse photography of Penicillium mold releasing penicillin to its surroundings

Ostia, Italy: water and sanitation

Examine how earthquake shock waves can generate a tsunami like the one that crashed down on Hilo in 1946

See how John Dalton built his atomic theory on principles laid out by Henry Cavendish and Joseph-Louis Proust

Visit Aymara and Quechua on the Altiplano of Bolivia and Peru to see the ancient drop-spindle technique

Ural Mountains: honeybee; brown bear

See how differing amounts of solar radiation at the poles and Equator affect Earth's climate and atmosphere

Learn how to DNA fingerprint using agarose gel, Southern blotting, and a radioactive DNA probe

extrasolar planet

See how astronauts train on parabolic fights to prepare for the weightlessness experienced in space

Apollo 11; Moon rock

Behold a time-lapse video of a total lunar eclipse and learn how the Moon's orbit prevents monthly eclipses

fritillary

Follow a Bacillus subtilis colony as it goes through the lag, log, stationary, and death phases of growth

Croatia: white stork

Examine glacial scratches on rocks from Switzerland to New York City for evidence of Earth's icy past

climate modeling

Investigate how honeybees construct combs out of wax to store honey, plant nectar, and bee bread

Mars: life

freezing points: fresh water and salt water

Understand how cell membranes regulate food consumption and waste and how cell walls provide protection

Investigate the magnetlike ionic bond formed when electrons transfer from one atom to another

standard model

astrology

Study the interdependence of a cell's nucleus, ribosomes, endoplasmic reticulum, and Golgi apparatus

Observe a single mature cell split its internal parts to duplicate into two daughter cells

quantum mechanics

Observe a farmer toiling in a hillside grape vineyard along the Rhine River at Europe's northernmost point

Compare differences in the leaf structures and environments of flowering dicots, ferns, pine trees, and cacti

Learn how invasive species and habitat destruction have threatened Hawaii's yellow-faced bees

Learn about solar-system theories by Aristotle, Ptolemy, Nicolaus Copernicus, and Johannes Kepler

Observe a chameleon's zygodactylous feet, acrodont dentition, independent eyes, and projectile tongue at work

Compare how gymnosperm and angiosperm vascular seed plants store their seed

fossil coral

bison, European; Belovezhskaya Forest

Sue: discovery and excavation of dinosaur bones

Track the development of a human embryo into a baby from fertilization to childbirth

gravitational waves

firefly; bioluminescence

See how cloud formation near a low-pressure system or ongoing tropical storm fuels a hurricane

Voyager 2: arrival at Uranus

Examine the trophic levels of producers, herbivores, and carnivores in a given ecosystem

conservation: fishing

Higgs boson

ichthyosaur

fungus: ecological importance

Study how meteorologists track air pressure and moisture for early signs of tornado formation

Study the life cycle and fossilization of Carcharocles megalodon from the Miocene and Pliocene epochs

eye: pupil; perception, visual

See stalagmites and stalactites formed by carbonite mineral deposits from limestone dissolved by groundwater

Learn how a hummingbird can fly in any direction and about its iridescent plumage

Examine how a subcutaneous fat layer supplies nutrients to dense connective tissue and epithelial cells

Learn how the world's largest rodent escapes jaguar, anaconda, and human predators

See how sea creatures have evolved different adaptations to both catch and avoid becoming prey

Study an amphibious tiger salamander of the mole salamander family Ambystomatidae in its natural habitat

Encke's comet: coronal mass ejection

respiration, photosynthesis, and the cycle of life

Discover how bacteria evolved to survive in Earth's most-extreme habitats such as seafloor volcanic vents

photosynthesis

universe

Watch Neil Armstrong, Buzz Aldrin, and Michael Collins travel to the Moon on Apollo 11

Study the unique evolution of species adaptions and biological diversity in the Galapagos Islands

Dive into stomate transpiration of a Pegonia plant highlighting functions of guard cells and root hairs

Witness crop destruction by hail and examine a hailstone's interior under polarized light

climate change: marine ecosystem

atom

Learn how purple sulfur bacteria photosynthesizes sans oxygen and how myxobacteria decomposes forest material

Examine how the theory of plate tectonics explains volcanic activity, earthquakes, and mountains

Discover how Galapagos finches underwent adaptive radiation and aided Darwin in his theory of evolution

Mars

See the black skimmer water bird skim the calm surface with its longer lower mandible in search of prey

meteorite

Nice model; Kuiper belt

Tour the Pampas to catch sight of a giant anteater, crab-eating fox, and pampas deer

Classify volcanic eruptions based on the physical and chemical properties of the magma

Consider what makes the Komodo dragon's bite lethal while exploring its Indonesian habitat

elastomer

iris flower

Observe the aggressive social behaviour of territorial perciform jawfish fighting over burrow proximity

Follow a sea plow burying a fibre optic cable with repeaters for efficient information transmission

Behold Saguaro National Park plant life such as the saguaro cactus unique to the Sonoran Desert

Analyze the adenine, ribose, and three-phosphate chain structures that constitute adenosine triphosphate

Observe how radiation from atomic bombs and nuclear disasters remains a major environmental concern

Realize the contributions of Mary Somerville to the fields of astronomy, geography, physics, and meteorology

general relativity; gravity

elk: bugling call

sea level

Learn about the roles of colonization and slavery in Brazil becoming the world's largest coffee-bean producer

Study how melanocytes produce skin-darkening melanin and the dangers of long exposure to sunlight

See how an updraft of warm, unstable air moves the tornado vortex upward in expanding spirals

bramble flower

Study bacteria's role in organic decomposition from forest floors to landfills and wastewater-treatment plants

Greenland shark

photographing penguins at Neko Harbor, Antarctica

See how parasitic plants form vascular unions with hosts to compensate for an inability to photosynthesize

dog; smell

Queen Anne's lace

Learn about the nascent industry to space tourism in which people pay to be launched into space

Behold the multitude of Amazonian arthropods including spiders, scorpions, beetles, and mantids

honey; bee

solar system

Examine how a leopard frog's protruding, independent eyes help it catch flies, earthworms, and other prey

spider web

Learn how igneous, sedimentary, and metamorphic rock become one another in the rock cycle

Behold a time-lapse video of a mushroom cap's emergence from the ground

tiger shark; ray

European Space Agency: Don Quijote

human evolution

comet debris

world map: density of lightning flashes in a typical year

Watch a diver while learning how the cerebellum helps maintain muscle tone, posture, and equilibrium

Watch a starfish's tube feet pry open a mussel's shell and extrude its stomach onto the mussel

queen bee; mouse

star dahlia

aqueduct: Jerusalem

Learn how DNA thermal cycler employs polymerase chain reaction to copy DNA strands

Dissect a chloroplast and identify its stroma, thylakoids, and chlorophyll-packed grana

octopus

Study the migratory, predatory, and living habits of North American bald eagles

weightlessness

Learn about Magellanic penguins' namesake and observe them gather for breeding on Valdés Peninsula, Argentina

grey reef shark

Learn about Gila monsters' desert adaptations while watching one raid a nest's eggs for nourishment

red fox: cubs fighting for food

red fox: newborn cubs

subtraction by addition

Observe subadult cypris and adult barnacles using cirri retractile organs to collect food particles

$Diffraction of starlight explained$

Diffraction of starlight explained

Study dangerous lizards and turtles such as Gila monsters, crocodile monitors, and Komodo dragons

Investigate vegetation unique to cloud forests atop tepui and lowland rainforests in Guiana Highlands region

Examine the habitat and life cycle of the lungless red salamander amphibian from the Plethodontidae family

synchrotron radiation X-ray imaging of bombardier beetle

Explore an atom's interior to discover the layout of its nucleus, protons, and electrons

coral; planula

Watch living epidermal cells near the dermis push old cells toward the skin surface to die and become keratin protein

Discover the ways to measure a forest and calculate the biomass of the organic material in a temperate forest

Follow nitrogen and phosphorus cycles and learn why farmers fertilize fields after harvest

Glimpse Amazonian wildlife such as macaws, toucans, tyrant flycatchers, capybaras, sloths, and jaguars

Amur leopard

corn germination

Study the North American toad's projectile tongue in real time and slow motion as it catches insect prey

The dodo explored

bruise

Schmitt, Harrison: Apollo 17 astronauts Eugene Cernan and Harrison Schmitt singing while walking on the Moon, December 1972

Cornish lily

Japanese giant salamander (Andrias japonicus)

barn owl; dormouse

bamboo

cheese

Understand the relationship between a society's development and the management of its mineral resources

Analyze how light affects plants' uptake of carbon dioxide and emission of oxygen

Europa

shrimp: two species of shrimp living near an undersea vent

S waves travel through an elastic medium in curved paths and shear the medium in one direction and then another

Study Earth's daily rotation on its axis and yearly revolution around the Sun

pink light

Consider how Isaac Newton's discovery of gravity led to a better understanding of planetary motion

cloud types

Explore the anatomy of a plant's mesophyll to understand how chlorophyll generates a green appearance

Rhodope Mountains: vultures

Visit Aymara Indians grinding grains, sewing, and boatbuilding to fish Lake Titicaca between Peru and Bolivia

Consider the successes and failures of the U.S. space shuttle program and the cost of space exploration

Consider Jakob Steiner's Roman surface in which each tangent plane intersects the surface in a pair of conics

Review the fundamentals of heat transfer and discern between heat and temperature

Uncover the forces of potential energy, kinetic energy, and friction behind a grandfather clock's pendulum

Grasp the importance of Sputnik, Yuri Gagarin, Apollo 11, the Hubble Space Telescope, and SpaceShipOne

Discern between umbra and penumbra, partial and total eclipses, and solar and annular eclipses

Watch clouds transforming into tornadoes

colour: Sun; sky

Try to find brown leaf and leaf-blemish katydids as they mimic their surroundings for camouflage

brown hyena

Learn about the characteristics, reproductive habits, and different species of sea horses

feathered dinosaur

Consider the theory of a large meteor or comet striking Earth and causing the extinction of dinosaurs

Milky Way: electromagnetic spectrum

Learn about the spacecraft in orbit around Mars and the Opportunity and Curiosity rovers on Mars's surface

Learn how barley malt and corn are aged in oak barrels and then blended to taste to create Scotch whiskey in a distillery in Scotland

Observe an impala herd communicate via grooming, freezing reflexes, prancing, and sprinting

Observe the South American lowland tapir wading in a swamp for food

bonobo; social behaviour, animal

Discover how heat from Earth's core creates convection currents that cause crustal plates to shift

great bustard

oat

Learn how chromatophores enable an anole to change colour based on its environment and stress level

Earth seen from Messenger

Investigate the various types of phytoplankton, how they photosynthesize, and their anatomies

Examine how rapid warm-air updrafts form cumulonimbus thunderclouds that produce heavy rains and lightning

fern; plant growth

Determine the chemical composition of Earth's atmosphere and discover the forces behind wind patterns

See toads engage in amphibious amplexus and witness metamorphosis of tadpoles into toads

organelles

red fox: feeding cubs

Explore the interactions between the water cycle and Earth's terrain to understand climate and weather

biological clock: suprachiasmatic nucleus

Study how Ptolemy tried to use deferents and epicycles to explain retrograde motion

Watch mating display of Anna's hummingbird and how hens use food to coax fledglings to fly

Follow wool from being sheared off alpacas in the Andes to mills for spinning and weaving

Follow the electrical and chemical changes undergone to transmit an impulse through the human nervous system

Uncover the geologic history of the Grand Canyon stretching back to the Archean Eon

Meet longhair cat breeds from Balinese and Cymric to Javanese and Norwegian Forest cats

$Discover how diffraction occurs with sound, electromagnetic radiation, and small moving particles$

Discover how diffraction occurs with sound, electromagnetic radiation, and small moving particles

Test whether solutions formed by ionic or covalent bonds show more electrical resistance

Witness Central and South America's sensitive plant's rapid movement that is thought to be a defense mechanism

big-bang model

Learn how the foxglove flower has coevolved with the bumblebee to increase pollination efficacy

cat; taste receptor

Learn about the threats of habitat fragmentation and illegal hunting posed to Bengal tigers and other species

Sayan Mountains: pika

Witness a grasshopper molt and emerge more fully formed from its hard outer skeleton

Learn how Indo-Pacific lionfish species have become invasive in ecosystems around the globe

Earth-crossing asteroid; Gaia

Solar Dynamics Observatory: solar flare as observed by the Atmospheric Imaging Assembly, April 8, 2010

Divide into four phases the reproduction process of chromosomes in plant and animal cells

Eurasian beaver

Study the San Andreas Fault to see how horizontal movement displaces underlying rock and causes earthquakes

Observe a herd of gazelles grazing, playing, and nursing in their natural habitat on the African plains

Discover the copepod's place in the marine food chain and how it develops from a larva into an adult

Track the process of ecological succession from weeds to towering oaks and hickories in a climax community

Ningaloo Reef, Western Australia

aardvark

Behold a desert thunderstorm and resulting flash flood scour the sandy soil and terrain

beekeeping; colony collapse disorder

See how sea otters maintain the balance of kelp-forest ecosystems by consuming sea urchins

Study how bacteriophages replicate by injecting nucleic acid into a bacteria cell to create virions

Discover the nightmarish reproductive habits of the world's largest wasps with the most painful stings

Examine habits and dangers lemmings face during migration such as predation, starvation, and accidents

lemon balm

Examine the various changes undergone by an elk's coat from winter to summer and from nursing calves to adults who eventually separate to form new herds

“The sausage herb”

Voyager 2: arrival at Neptune

dark matter

Study how the Sun's gravitational pull keeps Earth in a nearly circular orbit

See sugar cane harvested with machetes and learn about the crop's role in the Brazilian economy

Planck's constant

European bee-eater

Kamchatka Peninsula: spawning sockeye salmon

Observe the meiotic reproduction of a diploid cell into four haploid gametes

Kepler's laws of planetary motion

Compare and contrast reproduction, water absorption, and energy generation of liverworts and mosses

Namibia: lion

Turing, Alan: morphogenesis

Learn how plants use osmosis, facilitated diffusion, and active transport to ingest water and mineral salts

Study how red blood cells transport oxygen and carbon dioxide through the human cardiovascular system

paradox

See a golden eagle take flight from its nest to swoop down on rabbit prey

universe

aphid

rattlesnake hunting coatis

Learn how deforestation in Central American countries like Belize gives way to erosion and poverty

Examine a rag worm crawling in sand and a close-up of its gills

dandelion

Discover what astronomical forces engender the phenomena of solar and lunar eclipses

Study the different ways mushrooms release spores and watch mold hyphae spread across bread

sunflower

See samples of what is possibly soft tissue discovered in a Lufengosaurus fossil from the Jurassic Period

Investigate how segments of Brazil's Amazon Rainforest is cleared for lumber, agriculture, and grazing

Watch a passion-flower open and its anthers flip over and stigmas descend for efficient cross-pollination

catnip; fuller's earth

Observe a herd of African savanna elephants forage for food, self-groom, and enjoy a watering hole

Watch a banded sand snake seem to swim under sand and a sidewinder snake sidewinding across the desert floor

Observe the hagfish's horny teeth and scaleless exterior covering a cartilaginous skeleton

Watch how a tire-swing pendulum demonstrates the law of conservation of energy

Discover how the National Oceanic and Atmospheric Administration's weather satellites track the weather

Dissect the anatomy of icosahedral, rod-shaped, and bacteriophage virus structures in electron micrographs

plant coloration and pigments explained

Learn how the Andes block warm, moist eastern air causing heavy rainfall that flows into the Amazon River

spider; gliding

Follow a burrowing earthworm seeking soil's moisture to protect its oxygen-collecting skin

Watch an Apollo mission liftoff from the Moon to rendezvous with Command and Service modules

Pluto: Pluto rotating

gravitational lens; dark matter

Observe sea star reproduction from egg and sperm release and fertilization to zooplankton embryos and larvae

Observe the unusual adaptation of the poisonous squirting cucumber in which mucilage-covered seeds are ejected

Mars

National Zoological Park: conservation efforts

Examine evolved differences between Galapagos tortoises across Galapagos Islands

Large Hadron Collider

the universe

Watch as a southern elephant seal pup is startled on the Argentinian coast and hear its snarl

Take an in-depth look at the variety of plankton from diatoms and microflagellates to jellyfish

spiderweb

Observe protozoan microorganisms from a drop of pond water under optical and electron microscopes

K–T extinction

Learn how hermaphroditic coral reproduces once a year after a full moon in good water conditions

meerkat: disarming a scorpion

Behold marine worm's tentacles bloom from its burrow exposing mucus traps for food particles

Witness astronaut White perform the first extravehicular activity on the Gemini 4 mission

Observe a tower of giraffes feeding on acacia leaves and oxpeckers combing giraffes' coats for parasites

Discern the difference between pahoehoe and aa volcanic lava flows at Kilauea, Hawaii

Study the effect of increasing concentrations of carbon dioxide on Earth's atmosphere and plant life

Observe a North American raccoon scale a tree to raid eggs from a red-tailed hawk's nest

Study the roles of anthers, stigma, pollen tubes, and ovules in plant embryo fertilization

Consider the theory of isostasy as an explanation for landforms and the geologic cycle

Observe how an Anglerfish uses its unique anatomy to imitate a wriggling worm to lure in prey

Observe a brindled gnu herd migrating and grazing followed by zebras, crowned cranes, lions, and hyenas

Inspect a cross-section of dermis and epidermis and see papillae, blood and lymph vessels, muscles, and nerves

Watch cress seeds absorb water to catalyze the metabolic activity involved in germination

Gir National Park: Asiatic lion

Andromeda–Milky Way collision

Study adaptations evolved by bryophytic mosses, hornworts, and liverworts and those of vascular angiosperms

Learn about tree frog egg laying and hatching and see through a glass frog's skin to glimpse its anatomy

Discuss with Kara Rogers how the scientific model is used to test a hypothesis or represent a theory

Human Genome Project

Study the place of sedimentary rock in the rock cycle and how geologists classify such geologic formations

Examine the ecologic importance, life cycle, and anatomical structures of the freshwater crustaceans Daphnia

solar flare

gray seal

Consider the amount of physical and educational training necessary in becoming an astronaut

fission: fission of uranium nucleus

spider: locomotion on water

Learn how the Richter scale relies on vibration to logarithmically track earth tremors

Discover how the Moon's equal periods of rotation and revolution affect its orientation toward Earth

brain-computer interface

Examine Aristotle's model of the solar system and note its failure to explain phenomena like retrograde motion

$Perceive refraction as a wave's speed is changed by its passing between different media$

Perceive refraction as a wave's speed is changed by its passing between different media

Observe a zebra herd on the African plains and the mutualistic relationship it shares with the oxpecker

Learn the difference between weather and climate and how small climate changes can increase natural disasters

Investigate how the growth pattern of a mushroom spore's hyphae creates a fairy ring

Pacific Ocean: plastic debris

ringed seal; Greenland shark

Encounter some of the 20,000 legume species from vines and trees to shrubs and herbs

California newt

gray seal; cat shark

Follow Voyager flight paths past gas giants Jupiter, Saturn, Uranus, and Neptune and beyond Pluto

saffron

barracuda and olive sea snake

Discover how ecological tourism at Monteverde Cloud Forest Biological Reserve prevents forest clearing

space program: 1960s Dryden Flight Research Center contribution to the space program

Observe a rhinoceros family and oxpeckers feeding on parasites living on the rhinos' skin

Arctic: snowy owls and Arctic foxes

Learn about California's dominance as an agricultural producer and about its reliance on immigrant laborers

tarsier

Observe microscopic sea organisms diatoms encased in silicified cell walls with intricate designs

moon

Consider how the invention of the microscope abetted the discovery and categorization of cells

Follow an Ethiopian community churning butter, dyeing cloth, and harvesting subsistent crops

Examine commensalism among fish species such as shrimp, neon goby, and moray eels

Spot the Andean condor soaring among the Andes mountaintops and note its impressive wingspan

Study the courtship practices of these flightless ratites and watch a mother ostrich care for its young

Study how magma erupts as lava and turns into pumice or hardens to form a shield volcano

Observe a quill-bearing North American rodent ambling and eating in its natural habitat

Watch an animation of an aquatic dragonfly larva extending its labial mask to catch prey

cyclone: formation

Learn why suction cups require outside atmospheric pressure to press down on the low-pressure interior

Understand how roots and leaves transport oxygen, carbon dioxide, and minerals vital to a plant's development

fetal wallaby

Witness the bullfrog's powerful action generated by its hind legs as it jumps through a field

Moorea: lemon shark

Learn how venom produced by male platypuses may uncover new ways to manage pain in humans

PHELIX laser

Namib desert

honey-making process

Learn how Earth's crustal plates grind against each other and send energy waves in all directions

Observe a female black pilot snake hatch a clutch of eggs and a newborn use its egg tooth to hatch

See how water transforms between liquid, ice, and vapour in the water cycle

Titan rocket: Gemini launch and booster separation

Classify colors on the visible spectrum of electromagnetic radiation by hue, saturation, and brightness

Learn how dominant and recessive genes determine which traits and offspring will possess

red scale worm

green sea turtle

admiral butterfly

Examine the application of Werner Heisenberg's uncertainty principle of subatomic particles

plant disease: infection from water

grey-headed flying fox

Discern between body and surface waves, primary and secondary waves, and Love and Rayleigh waves

extrasolar planet detection

mink: hunting for food

extrasolar planets; TRAPPIST-1

Learn how paired chromosomes composed of mostly DNA determine an organism's heredity

Study the distinctive characteristics of the North American timber tulip tree of the magnolia family

Use the Punnett square to track dominant and recessive allele pairings that make up a trait's genotype

View elephant seals on Argentina's southern coast and Magellan penguins on the country's Valdes Peninsula

Study the impact of greenhouse-gas emissions on Earth's temperature and sea levels

Learn how astronauts exercise to combat the effects of microgravity on their bone and muscle masses

Is Pluto a planet?

Inspect evidence for the theory of continental drift involving plate tectonics and supercontinent Pangea

brown dwarf

Explore the adaptions of ray-finned fish species such as sea horses, filefish, jawfish, pipefish, and boxfish

Titan; Cassini-Huygens space mission

Examine the role of sunlight and gravity in phototropic and geotropic plant growth

Study the long-lived Greenland sharks inhabiting the Arctic Ocean and North Atlantic

Follow the history of U.S. spaceflight from President John F. Kennedy to Neil Armstrong and Apollo 11

Consider how a single-celled organism contains the necessary structures to eat, grow, and reproduce

Observe a baboon troop descend from treetops to rove, play, and forage in the Tanzanian landscape

overview of plant reproduction

coelacanth

#WTFact: Space

red kangaroo

A demonstration of Love waves and the shear motion involved in the perpendicular displacement of the solid medium near its surface with varying vertical elastic properties

Examine a variety of echinoderm species such as starfish, basket star, sand dollar, and sea cucumber

momentum in relativity

Learn how the Sun warms moist air near the ground and causes it to rise and condense on dust particles

pilot whale; beaching

Examine the relationship between Northern fur seal cows and their pups and see how pups learn to swim

Glimpse Amazonian wildlife such as anacondas, tarantulas, leafcutter ants, scarlet ibis, and black skimmers

Valdés Peninsula, Patagonia: whales

Review the spatial relationships between the Sun, Moon, and Earth during eclipses

Explore Uranus's night side and ring system in this computer animation of Voyager 2 space probe's passing the planet on its way out of the solar system

Zoom in on a micrograph of virions to examine their outer protein shells and inner nucleic acid cores

Learn how wolves are migrating from Germany back into Denmark after having been exterminated two centuries ago

cheetah: wellness check

Norway: salmon run

Compare monocotyledons' embryonic endosperm to dicotyledons' prephotosynthesis food storage system

onions: caramelization

Meet a 2,000-pound leatherback sea turtle and the pair of Russian tortoises that traveled to the Moon

space suit

blacktip and lemon sharks

Learn about and witness the blowfish's puffing defensive behaviour

blue-rayed limpet

hypogeal germination

Discover how an object's density determines how much water will displace and whether it is buoyant

See how astronomers use the radial velocity method and space probes COROT and Kepler to discover exoplanets

Observe scarlet macaw parrot using its strong beak and dexterous feet to obtain food

role of chloroplasts in photosynthesis

See how Nicolaus Copernicus's heliocentric model replaced Aristotle's and Ptolemy's geocentric models

Explore bacteria throughout the human body and examine the role of sweat glands in the immune system

Follow hormones of the endocrine system from glands to their chemical receptors on or in a cell

Observe flightless cormorants in their natural habitat on coasts of Fernandina and Isabela islands

social insects: pheromones

space shuttle Columbia

Einstein, Albert

Discover the International Astronomical Union's naming schemes for features on Pluto and its moons

Einstein, Albert; Hubble, Edwin; dark energy

scalloped hammerhead shark

Discover how hat-thrower fungi species fling sporangia to be consumed by grazing cows and horses

Study chemistry's periodic law to understand elements' properties and how they relate to one another

Learn how Austrian Catholic monk and botanist Gregor Mendel observed properties of heredity

See how pasteurization protects food and phagocytes protect the body from harmful bacteria

Observe a colony of great white egrets eating, flying, and gathering near water

Follow a female grasshopper as its eggs are fertilized, buried underground, and hatched

Consider how Heinrich Hertz's discovery of the photoelectric effect led to Albert Einstein's theory of light

tornado

Jupiter: Jupiter viewed from one of its moons

Study the wave motion of sound radiating from a point source using a suspended spring

three-toed sloth

oak seedling

Learn how flowers use secreted nectar, scent, and appearance to attract cross-pollinating bees

dog: types

Moorea: humpback whales

aurora australis

Study metagenesis and roles of antheridia, archegonia, and sporangium in moss Mnium hornum

Study the evaporation process of water from Earth's surface into the sky where water vapour forms clouds

Examine the preparation measures taken by foraging pikas and hibernating ground squirrels

rainbow

greenness of plants

Learn how gauchos came to represent individuality and freedom in the same spirit as the American cowboy

meiosis

Examine the advanced agricultural practice of chicken farming from the hatchery to the processing plant

Learn about P waves, S waves, Love waves, and Rayleigh waves generated by an earthquake

Witness a caterpillar larva eat milkweed, form its pupa, and emerge a monarch butterfly

See how diversity of cichlid species in Lake Nyasa compares with finch diversity in the Galapagos Islands

egg

Witness the praying mantis's predatory feeding habits and learn about the insect's sexual cannibalism

Diagram stars, planets, constellations, and other heavenly bodies by understanding Earth's celestial sphere

Learn how pollution from industrial emissions and car exhaust is trapped against mountains to cause smog

Among zooplankton exist transparent larvacean, ciliate protozoans, and other permanent plankton

Lake Baikal's unexpected tenant

Learn how advancements in the xylem, vascular tissue, and flower separate angiosperms from gymnosperms

Learn how hibernating ground squirrels lower their body temperatures to enter a dormant state

sika and Siberian tiger: feeding habits

spring crocus

Discuss different irrigation methods used in northern Africa such as shadoofs, water scoops, and modern pumps

Investigate how high radiant heat loss causes water vapor to condense into dew droplets

Analyze the mystery behind cilium and flagellum motion and compare their structures with mitotic spindle fibres

basking shark

Observe the importance of a mushroom's mycelium in the decomposition of organic matter

See how Edwin Hubble, Georges Lemaître, Arno Penzias, and Robert Wilson contributed to the big-bang model

Observe a demonstration of how wind energy transferred to water generates waves

pleuronectiform: tonguefish near submarine volcanic area near the Mariana Islands

Discern the difference between frequency and amplitude by studying sound waves

Watch a demonstration of Isaac Newton's law of action and reaction as a rocket launches into space

ecological succession

fire

Glimpse the Amazon's diverse wildlife from anacondas and sloths to macaws and capybaras

solar prominence

Robert Hooke and his discoveries

Follow the trails of leafcutter ants stripping rainforest foliage to cultivate fungus-based food in their nest

Learn how resistance affects the flow of electrons in an electric circuit

Study the roles of a fish's scales, swim bladder, and gills in its respiratory system

Discover how a fern employs its vascular system to circulate water and nutrients betwixt its leaves and roots

Investigate the role of water in erosion and in the greater geologic rock cycle

Siberian taiga animals

seismic sensing

Study the various gourd species such as the summer favourite watermelon and the natural sponge loofah

Observe marsupial kangaroo family carrying and feeding its joey in its natural habitat

Listen to a humpback whale pod communicate via underwater “songs”

lovage

Study cheetahs playing and grooming one another before hunting gazelle herd

Solar Dynamics Observatory: solar flare as observed by the Atmospheric Imaging Assembly, April 8, 2010

Study a jellyfish's muscular contractions and learn how the carnivore uses its tentacles to catch prey

Examine the state of Polish agriculture and observe the primitive techniques and manual labour employed

tide

Learn how termites use salivary secretions to cement debris to decaying wood nests in their rainforest habitat

Learn how Hungarian farmers harvest and grind Capsicum annuum peppers to produce paprika

Behold a true beaked whale mother and calf near the Azores and Canary Islands

seed dispersal

Compare the Rafflesia arnoldii's massive bloom with Amorphophallus titanum's towering inflorescence

bat

Examine what separates mushrooms, mildews, molds, and yeasts from the plant and animal kingdoms

Watch a silica glass preform heated by a furnace be turned into an optical fibre

near-Earth asteroid

Arum: pollen

supernova

View a time-lapse video of cloud formations rolling across the sky followed by a thunderstorm

Explore how plastic is recycled in into insulation and other building materials in Leeds, England

Learn how annual flowers survive harsh desert conditions and how cacti provide sustenance for wildlife

Examine stained images discerning phagocytes from bacteria amid phagocytosis

Southern Ocean: new species

Learn how scientists use time-lapse photography to track movement and flow of glaciers

echolocation; dolphin

marigold

star: formation

sea level measurement

Follow a beaver family and its kits for a year in the Rocky Mountains and learn about their habits and habitat

Discover how much nitrogen, oxygen, water vapour, carbon dioxide, and other elements constitute Earth's air

hyssop

Inspect X-ray imaging of the Sun's veil of plasma known as the solar corona, sunspots, and gaps in the corona

Compare the surface tensions of different liquids such as water, alcohol, mercury, and soap bubbles

Brush up on anthers, stigmas, florets, and insects with a self- and cross-pollination guide

Study a grasshopper feeding on a leaf and learn how fast a grasshopper cloud can consume a farmer's crops

Phobos

methane; greenhouse gas

Hubble Space Telescope

formation of fossils

Witness a crocodile hatchling emerge from its egg and hear the newborn call for its mother

Observe a land iguana, its burrow, and its herbivorous diet of cactus flowers, roots, and stems

Observe a predatory lion pride in a typical day of grooming, playing, hunting and eating prey, and sleeping

Guadalupe fur seal

Study how spiders' prodigious predation of herbivorous insects protects plant life

#WTFact: Animals Revealed

Observe how sugarcane is farmed and harvested in the fields of Brazil

Discover how a meteoroid turns into a brightly lit meteor before falling to Earth's ground as a meteorite

meerkat: dominate female

Lorenz, Edward: chaos theory

Sun

Walk through the process of mitotic cell division to understand the foundation of growth

Master the difference between poisonous and venomous while discussing black mambas, garter snakes, and toads

willow catkin

Lake Khanka: Chinese softshell turtle

Examine what happens to the electrons of two neutral objects rubbed together in a dry environment

Compare toothed whales' high-frequency echolocation to baleen whales' low-frequency communication

Discover how the cashew's close relationship to poison ivy and poison sumac makes its shell toxic to consumers

Reveal a magnetic field's shape and study the interaction between the magnetic poles using iron filings

Observe an Eciton army ant colony migrating by night and forming a bivouac nest entirely out of themselves

Define organism and see if Carsonella ruddii or Mycoplasma genitalium is the world's smallest living thing

spider: locomotion on water

Discuss climate change and food scarcity as potential causes for the megalodon's extinction

Observe microphotographic time-lapse of blastomeres created by mitotic cleavage of embryonic cell

Review how underwater earthquakes, volcanoes, or landslides can generate tsunamis

Observe a trumpeter swan care for cygnets in their nest and marsh-grass habitat

Explore the Arctic doomsday vault preserving the planet's seeds in the Svalbard archipelago

dwarf planet

Examine the protein shell and RNA- or DNA-filled inner core of an icosahedral virus

Observe totality of total solar eclipse as the Moon passes between the Sun and Earth

galaxy clusters

Witness a doe give birth two a pair of fawns and then guide them through their juvenile stage

Learn how rose petals are harvested and distilled to derive attar of roses essential oil

Examine bipedal biomechanics through a skeletal view of a Tyrannosaur's stride

extrasolar planet

Global warming and reduced ventilation are considered causes for the decline of dissolved oxygen in the oceans

Helgoland: gannets and other seabirds

See how a tornado is a weather phenomenon that extends from a strong thunderstorm

time travel: grandfather paradox

See how sieve tubes and sieve plates stimulate mass flow within a plant's phloem cells

Examine how llamas serve as pack animals and wool sources in highlands of Bolivia, Chile, and Peru

Australia: venomous animals

types of asexual plant reproduction

Investigate varying electron configurations in electron shells around an atom's nucleus

Analyze how individual cilium employ viscous drag to coordinate power and recovery strokes for locomotion

resin; wood ant; amber

Malpelo Island: scalloped hammerhead shark

alchemy

Study the variation of magma's viscosity between eruptions at Mount Pinatubo and Kilauea

Philae space probe landing on Comet 67P/Churyumov-Gerasimenko

Behold near-boiling water spurting from geysers and hot springs in Wyoming's Yellowstone National Park

Observe a giant anteater use its long muzzle and wormlike tongue to eat and drink in its natural habitat

thyme

mantis shrimp; materials science

white water lily

See how enzymes in wax moth larva could lead to new recycling biotechnologies

polar bear: strength

Study DNA's double-helix structure to learn how the organic chemical determines an organism's traits

game theory in evolution

Glimpse a flamingo fly to join a wading flock and watch another flock walk and drink simultaneously

male and female pine cones

View an Icelandic waterfall and learn about its geologic life cycle and erosion into a smooth riverbed

Consider the whooping crane's migratory patterns and how the human population has contributed to the destruction of its habitat

lavender

Observe how the sporophytic fern appears to unfurl upward as it grows from its rhizome

Magma reaches Earth's surface as lava and flows over Hawaiian vegetation and into the ocean

entropy; arrow of time

Osa Peninsula: sea turtle conservation

Travel with erythrocytes through arteries and capillaries to deliver oxygen to surrounding tissues

pear flower

Follow water as it evaporates from the earth it shapes to condense in the atmosphere as clouds

See the disruption wrought by the introduction of the kudzu vine to the southeastern United States' ecosystem

Learn how the Richter scale measures magnitude and the Mercalli scale measures intensity of an earthquake

Study the Permian Period's carnivorous Dimetrodon and its sail's role in thermoregulation

rosemary

Discover penguin habitats from the Galapagos Islands near the Equator to Antarctica

Witness an orb-weaving spider using silk wrappings to immobilize grasshopper prey

Learn how the radiometric rubidium-strontium dating technique is used to determine the age of rock particles

Learn how the predatory pilot black snake strikes, suffocates, and consumes whole its rodent prey

Learn how satellites can be destroyed by space junk as small as a rogue screw

Examine how water held back by Egypt's Aswan High Dam turns turbines to generate electricity

Observe a bottlebrush flower's anthers split and twist so that its pollen is caught by its stigma

Observe a pocket gopher using its front teeth and foreclaws to burrow a home full of roots, stems, and tubers

underwater scene

global warming

Haʿapai Group, Tonga; humpback whale

See how physicist Robert Millikan devised a method for measuring the electric charge of single electrons

coral and global warming

Explore the mechanics of the lungs and rib and diaphragm muscles involved in human respiration

Zoom in on the serpentine locomotion of the limbless, amphibious caecilian over soil

monarch butterfly

osmosis and transpiration

Learn five facts about the astronomical phenomenon that occurs when the Moon passes between the Sun and Earth

tonguefish: group of tonguefish on the seafloor near the Mariana Islands

Study how eccrine glands in the dermis secrete sweat through pores in the skin's surface

snowdrop

Discover how astronauts mimic space's microgravity on Earth with a special plane and a ballistic flight path

Discover how the pilot black snake utilizes its ventral scales to glide through water, land, and trees

magnetism; temperature

See how Earth's constant axial tilt and yearly revolution around the Sun cause seasons

Study the habits of amoebae, vorticellas, paramecium, and other protozoans under a microscope

Thompson, Sir D'Arcy Wentworth

Study how sieve plates and suction-cupped tube feet enable sea stars to catch prey and move through water

Learn how mountains, bodies of water, and human habitation affect atmosphere activity

Behold the rattlesnake's rattle, thought to be a warning device to other organisms

cabbage white caterpillar

Study DNA's double-helix structure, nitrogenous bases, nucleotides, sugar molecules, and phosphate groups

Study how marine iguanas cover the Galapagos coasts and survive on varied seaweeds near and in the ocean

Follow an amphibian's life cycle from an underwater egg to a land-roving organism

Long-term data sets reveal increased concentrations of the greenhouse gas carbon dioxide in Earth's atmosphere

chromosome: cell cycle and mitosis

squall

Examine effects of smoking on lung tissue and various stages of respiratory disease

Learn about the World Meteorological Organization's rules for naming hurricanes and typhoons

Witness the beauty of various flower blossoms blooming

Compare the elephant's 95-week gestation period with the marsupial American opossum's 12-13-day gestation

sulfur: undersea boiling sulfur

European moose and calf

Learn what makes California the United States' dominant agricultural producer and see a grape become a raisin

web-footed gecko

Observe an anole change skin color for camouflage and fan its dewlap to mark possession or attract a mate

Observe the ancient, terrestrial velvet worm invertebrate crawl across leaf litter

Learn how hardy morning glory seeds' redundant genome and flavonoid-rich coats protect them from radiation

Classify newly formed snow crystals as fernlike stellar dendrites, columns, or needles

Listen to a Swedish salmon farmer discuss aquaculture and the importance of recreating the fish's habitat

See molecular bonds at work as two hydrogen atoms join a sulfur atom to make hydrogen sulfide

winter aconite

chimpanzee; human genome

Fighting for food on an oak tree

Watch human immune response phagocytosis in which granular leukocyte consumes bacteria

Newton's law of gravitation: Apollo 15 gravitation experiment

decomposing fruits and vegetables

dimension

Observe incandescent, ionized gas ejections from the Sun's chromosphere into the corona

Learn how phytoplankton supply oxygen via photosynthesis and serve as the first step in the marine food chain

Witness snowflake crystals created in a laboratory environment

reef shark; nurse shark

Witness a living plant cell's chromosomes carrying genetic material duplicate during the process of mitosis

chemist

Learn how the Brazilian government incentivized forest clearing in the Amazon for beef production and ranching

Watch a North American raccoon sift for aquatic prey using its sense of touch in a shallow pond

supernova; neutron star

plague epidemiology: genomic information

Observe mountain lion cubs playing and being cared for and carried by their mother

Mars Science Laboratory: entry, descent, and landing

Learn how Johannes Kepler challenged the Copernican system of planetary motion

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