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Biology

Within Science

Digital illustration of Native Americans rowing canoes illuminated by torches at night. Moonlight reflects off water.

Closeup of a row of young plants sprouting out of soil in a vast field beneath blue sky.

Clusters of delicate white flowers, some tinged with pink, at right and left foreground. Out of focus flowers are in background.

Aerial view of a silo complex. Paved roadways and plots of green grass run through and around it.

Low shot looking up at tree trunks with bare branches spread out against blue sky.

Color illustration of a squirrel curled up in a ball with its eyes closed. It rests on a nest of green, brown, and red beside a handful of acorns.

Rendering of a small, flowering plant that sprouts out of dirt. Grass and blue sky in background. Title card reads, "Photosynthesis."

Purple, red, and white feathers float on a blue backdrop. Text reads, "Introduction to Birds."

A herd of cattle, some adult, some baby, all with tags in their ears. Caption: The mother of this calf also has brown fur.

Closeup of vibrant green leaves. Caption: that form a network throughout the plant structure.

Illustration of two cells, one with spiky structures being overtaken by the other. Caption: how the body produces antibodies and T cells

Illustration of a doctor with a mechanical device in their hand looking at an image on a monitor. Spanish captions.

An animal with the body of a lion, an extra goat head on its back, and a snake instead of a tail. Caption: Chimera.

Sunlight is shining through in a forest with large number of trees.

An illustration depicts the sinuses present in a human skull.

Digital art shows the Titanic ship half sunk into the ocean with a large iceberg next to it.

Diagram shows brain nerve cells branching like plant roots.

A woman holds a wailing infant in her arms.

An enlarged view of the cells lining the retina is shown from an eyeball. A colorful and a black and white picture of parrot are shown on either side of the eyeball.

Sixteen eyeballs, each with different eye color. Caption: Martin-Schultz scale.

Diagram. Eight small strands with one or two red lines on them that represent DNA. The red lines are labeled two, six, seven, nine, ten, fourteen, fifteen, and X.” Next to the smaller strands is a bigger strand that is labeled “Twelve, NANOG, broken NANOG, pseudogenes.”

Red and orange digital atom with four electrons and a positive charge nucleus is next to a purple and yellow atom with four electrons and a positive charge nucleus. Text reads, “Atoms don't actually look like this.”

Man in glasses and cardigan holds palms together with lips parted in mid-speech. He stands before a green background with white scratches.

Graphic shows a gray fish with a fart cloud next to it. Inside the fart cloud is text that reads, “It’s Okay To be Fart.”

Man sits at a desk that has a computer, wires, and electrical and lab equipment on it. He holds a blue wire to a battery. Behind him is a bookcase filled with books and knick-knacks like a framed butterfly and different dinosaur skeleton miniatures.

Different math equations and graphs are drawn, with a butterfly as the backdrop.

Seven different butterflies, where four are placed at the corners facing the butterfly at the center and two at either side of the central butterfly.

Man in glasses gestures with hand and parts lips in mid-speech. Toys and books on shelves displayed in background. Text at right reads, "Gimme that science!"

A photo depicts many branches of a large tree.

Man talks to us in a room with a bookcase filled with books and knick-knacks like a Gundam toy, small globe, and a model of a space rocket.

Neon green cartoon eel swimming in water with small fish swimming around it.

Eight different screens with the same man’s face. He makes different exaggerated expressions like smirking, pouting, surprised, grimacing, and more.

Man talks to us with his eyebrows furrowed a bit as he stands in front of a black background.

Eggs of Screech owl, Turkey vulture, Audubon's Caracara, Kingfisher, Common Murree, Yellow Billed. Caption: Stoddard Et Al. Science 20 17.

Man speaks to camera while sitting in a room with a bookcase that is filled with books and knick-knacks such as a Gundam toy, a mini globe, and a spaceship.

Man in glasses and zip sweatshirt parts lips in mid-speech. Bookshelves line wall in background. Title card reads, ''Cerebellum."

Large plain with a very few trees and a large herd of mammals in the distance. Caption: 20,000 animals out a group of 1.3 million.

Close up view of upper body of a large turtle in the grass. Caption: Giants can measure up to 6 feet long and weigh up to 700 pounds.

Foot of an elephant being sprayed off with water while coming through an opening in a metal fence. Caption: we do every day, we check all of their feet.

Front end of a vehicle just visible behind a large herd of buffalo walking through the bushes. Caption: Boy, I've never sat in a bunch of buffalo like this!

Two people in an open-sided vehicle driving on a dirt road through trees and brush. Caption: I knew I'd find examples of symbiotic relationships at Lewa,

Close up of a rattlesnake's tail with the rattler in focus. Caption: Adam: That is a rattlesnake.

Baby rodent-like animals in a cardboard box with wood shavings. Caption: These babies are still too young to survive on their own,

A bird with long legs, colorful plumage and a yellow crest of feathers on its head in an enclosure with a bowl of food. Caption: Crown cranes and giraffe, all under the same roof

Still image from: Jellyfish for Kids

Still image from: Journey to the Microcosmos: A Microscopic Tour of Death

Still image from: Journey to the Microcosmos: A Microscopic Tour Through a Norwegian Fjord

Still image from: Journey to the Microcosmos: Adventures in Being Eaten

Still image from: Journey to the Microcosmos: Aeolosoma--Polka-Dotted Vacuum Worms

Still image from: Journey to the Microcosmos: Amoebas--Occasional Brain-Eaters

Still image from: Journey to the Microcosmos: An Hour of Our Uncut Microscopic Footage

Still image from: Journey to the Microcosmos: Are Microbes Good or Bad for Humans?

Still image from: Journey to the Microcosmos: Bacillaria--Distractingly Beautiful Crystal Colonies

Still image from: Journey to the Microcosmos: Becoming Your Own Baby Through Conjugation

Still image from: Journey to the Microcosmos: Bursaria--Giant Gravity-Sensing Vacuums

Still image from: Journey to the Microcosmos: Can Algae Fuel Our Cars?

Still image from: Journey to the Microcosmos: Can Bacteria Eat Plastic?

Still image from: Journey to the Microcosmos: Can Microbes See Without Eyes?

Still image from: Journey to the Microcosmos: Can This Baby Rotifer Escape Before It’s Eaten Alive?

Still image from: Journey to the Microcosmos: Copepods--The Diatom-Devouring King of Plankton

Still image from: Journey to the Microcosmos: Creepy Crawly Close-Ups

Still image from: Journey to the Microcosmos: Death in the Microcosmos

Still image from: Journey to the Microcosmos: Desmids--The Symmetrical Algae That's Full of Crystals

Still image from: Journey to the Microcosmos: Diatoms--Tiny Factories You Can See From Space

Still image from: Journey to the Microcosmos: Didinium--The Paramecium Hunter

Still image from: Journey to the Microcosmos: Dileptus--The Toxic Micro Elephant With an Insatiable Appetite

Still image from: Journey to the Microcosmos: Do Microscopic Immortals Actually Exist?

Still image from: Journey to the Microcosmos: Eating, Hatching, and Crashing Into the Moon--More About Tardigrades

Still image from: Journey to the Microcosmos: Euglenoids--Single-Celled Shapeshifters

Still image from: Journey to the Microcosmos: Flatworms--Simple Wiggly Tubes

Still image from: Journey to the Microcosmos: Flinching Saves Lives in the Microcosmos

Still image from: Journey to the Microcosmos: Foraminifera--Hard on the Outside, Squishy on the Inside

Still image from: Journey to the Microcosmos: Gastrotrichs--Four Day Old Grandmothers

Still image from: Journey to the Microcosmos: Getting to Know Our Single-Celled Ancestors

Still image from: Journey to the Microcosmos: Ghost Fleas--Tiny See Through Cyclopses

Still image from: Journey to the Microcosmos: Giant Microscopic Cannibals

Still image from: Journey to the Microcosmos: Heliozoa--Round, Sticky, and Covered in Spikes

Still image from: Journey to the Microcosmos: How Brownian Motion Helped Prove the Existence of Atoms

Still image from: Journey to the Microcosmos: How Cyanobacteria Took Over the World

Still image from: Journey to the Microcosmos: How Diatoms Build Their Beautiful Shells

Still image from: Journey to the Microcosmos: How Do Colonies Help Microorganisms Survive?

Still image from: Journey to the Microcosmos: How Do Microbes Make Decisions?

Still image from: Journey to the Microcosmos: How Do Microorganisms Pee?

Still image from: Journey to the Microcosmos: How Do Microorganisms Poop?

Still image from: Journey to the Microcosmos: How Do Microorganisms Reproduce?

Still image from: Journey to the Microcosmos: How Do Protozoa Get Around?

Still image from: Journey to the Microcosmos: How Does Yeast Make Bread?

Still image from: Journey to the Microcosmos: How Many Cells Are in a Microscopic Animal?

Still image from: Journey to the Microcosmos: How Microscopic Hunters Get Their Lunch

Still image from: Journey to the Microcosmos: How to Identify Microbes

Still image from: Journey to the Microcosmos: How to Name a Microbe

Still image from: Journey to the Microcosmos: How to Survive the Microcosmos

Still image from: Journey to the Microcosmos: How We Find Our Microbes

Still image from: Journey to the Microcosmos: How We Got the DNA From This Extremely Rare Ciliate

Still image from: Journey to the Microcosmos: How Your Blood Keeps You Alive

Still image from: Journey to the Microcosmos: Hydra--Stretchy, Speedy, & Probably Immortal

Still image from: Journey to the Microcosmos: Is the Mitochondria Always the Powerhouse of the Cell?

Still image from: Journey to the Microcosmos: Journey Through the Body of a Rotifer

Still image from: Journey to the Microcosmos: Kentrophoros--The Mouthless Ciliate With a Back Full of Snacks

Still image from: Journey to the Microcosmos: Lacrymaria--Vicious Long-Necked Predators

Still image from: Journey to the Microcosmos: Life Without Oxygen? Challenge Accepted

Still image from: Journey to the Microcosmos: Looking at Tardigrade Sperm and Other Reproducing Swimmers

Still image from: Journey to the Microcosmos: Looking for Answers in the Skull of a Zebrafish

Still image from: Journey to the Microcosmos: Making Decisions Without a Brain

Still image from: Journey to the Microcosmos: Meet the Microcosmos

Still image from: Journey to the Microcosmos: Microbes Don’t Actually Look Like Anything

Still image from: Journey to the Microcosmos: Microbes in Slow Motion

Still image from: Journey to the Microcosmos: Microorganisms Are Cleaning the Water You Drink

Still image from: Journey to the Microcosmos: Moss & Lichen--Which One Is Actually a Plant?

Still image from: Journey to the Microcosmos: Mouthless Parasites That Make Their Home in Worm Guts

Still image from: Journey to the Microcosmos: Mysterious Jiggly Crystals and Other Intracellular Structures

Still image from: Journey to the Microcosmos: Nematodes--The Worm That Sculpted the World

Still image from: Journey to the Microcosmos: Ophyroglena: The Tricky Transforming Ciliate

Still image from: Journey to the Microcosmos: Our Paramecia Are Infected

Still image from: Journey to the Microcosmos: Our Tardigrades Got Stuck in a German Post Office

Still image from: Journey to the Microcosmos: Paramecium--The White Rat of Ciliates

Still image from: Journey to the Microcosmos: Peritrich Ciliates--Masters of Long-Range Snacking

Still image from: Journey to the Microcosmos: Putting Coral Under the Microscope

Still image from: Journey to the Microcosmos: Relax and Enjoy the View

Still image from: Journey to the Microcosmos: Revealing the Hidden Colors of the Microcosmos

Still image from: Journey to the Microcosmos: Rotifers--Charmingly Bizarre & Often Ignored

Still image from: Journey to the Microcosmos: Slime Molds--When Micro Becomes Macro

Still image from: Journey to the Microcosmos: Slime Tubes in Search of Sunlight

Still image from: Journey to the Microcosmos: Some Eggs Don't Need Sperm to Make Babies

Still image from: Journey to the Microcosmos: Stentors--Single-Celled Giants

Still image from: Journey to the Microcosmos: Suctorians--The Ugly Duckling of Ciliates

Still image from: Journey to the Microcosmos: Synura--Smelly, Flowery Confetti

Still image from: Journey to the Microcosmos: Tardigrades--Chubby, Misunderstood, & Not Immortal

Still image from: Journey to the Microcosmos: Tardigrades--The Ambassadors of the Microcosmos

Still image from: Journey to the Microcosmos: Testate Amoebas--Blobby, Modest Shell Dwellers

Still image from: Journey to the Microcosmos: The 18th Century Tardigrade Debate

Still image from: Journey to the Microcosmos: The Algae That Saved an Astronaut's Life

Still image from: Journey to the Microcosmos: The Aquatic Snails That Leave a Path of Destruction

Still image from: Journey to the Microcosmos: The Arachnid Whose Poop Is Making You Sneeze

Still image from: Journey to the Microcosmos: The Beautiful, Brutal Tentacles of Hydra

Still image from: Journey to the Microcosmos: The Chaotic Life of Seashore Ciliates

Still image from: Journey to the Microcosmos: The Collotheca Doesn’t Mind Eating Its Own Babies

Still image from: Journey to the Microcosmos: The Colors of the Microcosmos

Still image from: Journey to the Microcosmos: The Complicated Relationships of the Microcosmos

Still image from: Journey to the Microcosmos: The Dark History of Sea Monkeys

Still image from: Journey to the Microcosmos: The Diversity of Shapes in the Microcosmos

Still image from: Journey to the Microcosmos: The Fantastic Feet of the Microcosmos

Still image from: Journey to the Microcosmos: The Fish Sucking Lice That Aren’t Lice

Still image from: Journey to the Microcosmos: The Fungus That Traps and Kills Nematodes

Still image from: Journey to the Microcosmos: The Gruesome Tale of the Hitchhiking Parasite

Still image from: Journey to the Microcosmos: The Illuminating Reason Perenema Curl Up Into a Ball

Still image from: Journey to the Microcosmos: The Incredible World of Bacterial Communities

Still image from: Journey to the Microcosmos: The Indecisive Evolution of Gastrotrichs

Still image from: Journey to the Microcosmos: The Many Ways Microbes Eat, Get Eaten, and Poop

Still image from: Journey to the Microcosmos: The Micro World Right Under Your Feet

Still image from: Journey to the Microcosmos: The Microbe You Eat All the Time

Still image from: Journey to the Microcosmos: The Microcosmos Is a Very Stressful Place

Still image from: Journey to the Microcosmos: The Microcosmos Is Made of Star Stuff

Still image from: Journey to the Microcosmos: The Microscopic Circle of Life

Still image from: Journey to the Microcosmos: The Moss Animals That Are Defined by Their Butts

Still image from: Journey to the Microcosmos: The Purple Bacteria That Are Afraid of Oxygen

Still image from: Journey to the Microcosmos: The Remarkable Mystery of Land Plants

Still image from: Journey to the Microcosmos: The Secret Things Living in Your Aquarium

Still image from: Journey to the Microcosmos: The Secret Things Living In Your Drains

Still image from: Journey to the Microcosmos: The Shared Doom of Microscopic Hitchhikers

Still image from: Journey to the Microcosmos: The Spatula-Shaped Ciliate Family

Still image from: Journey to the Microcosmos: The Terrifying Viruses of the Microcosmos

Still image from: Journey to the Microcosmos: The Tiny Worlds Inside of Single-Celled Organisms

Still image from: Journey to the Microcosmos: The Tube-Dwelling Architects of the Microcosmos

Still image from: Journey to the Microcosmos: There's More Than Coral at the Coral Farm

Still image from: Journey to the Microcosmos: These Algae Curl Up Into a Ball When They Get Stressed Out

Still image from: Journey to the Microcosmos: These Microbes Wear Chain Mail Made From DNA

Still image from: Journey to the Microcosmos: These Mites Are Probably on Your Face Right Now

Still image from: Journey to the Microcosmos: These Rotifers Glue Themselves Together

Still image from: Journey to the Microcosmos: These Squishy Dots Move So Fast You Might Miss Them

Still image from: Journey to the Microcosmos: These Walking Ciliates Are Frustrating

Still image from: Journey to the Microcosmos: This Ciliate Is About to Die

Still image from: Journey to the Microcosmos: This Extremely Rare Ciliate Has Only Been Seen Four Times

Still image from: Journey to the Microcosmos: Trying to Make Sense of This Overwhelming World

Still image from: Journey to the Microcosmos: Unsolved Mysteries of the Microcosmos

Still image from: Journey to the Microcosmos: Water Fleas: Look Weird, Adapt Weirder

Still image from: Journey to the Microcosmos: Water Is Thicker When You’re Smaller

Still image from: Journey to the Microcosmos: Water Mites--Sticky Dancers With Crystal Poop

Still image from: Journey to the Microcosmos: We Accidentally Grew Crystals

Still image from: Journey to the Microcosmos: We Filmed Tardigrade Mating

Still image from: Journey to the Microcosmos: We Finally Found the Elusive Bristle Worm!

Still image from: Journey to the Microcosmos: We Found a Super Rare Microbe!

Still image from: Journey to the Microcosmos: We Recorded Some Strange Goop. What Is It?

Still image from: Journey to the Microcosmos: We Recorded Too Much Slow Motion Footage

Still image from: Journey to the Microcosmos: We Upgraded Our Microscope... Again!

Still image from: Journey to the Microcosmos: What Are These Vorticella up to?

Still image from: Journey to the Microcosmos: What Even Is a Species?

Still image from: Journey to the Microcosmos: What Humans and Stentors Have in Common

Still image from: Journey to the Microcosmos: What If All the Microbes Disappeared?

Still image from: Journey to the Microcosmos: What Is Mold and Why Does It Love Bread?

Still image from: Journey to the Microcosmos: What Is the Point of Sex?

Still image from: Journey to the Microcosmos: What Microscope Do We Use?

Still image from: Journey to the Microcosmos: Where Did Eukaryotic Cells Come From?

Still image from: Journey to the Microcosmos: Where Is This Anemone Really From?

Still image from: Journey to the Microcosmos: Why Are These Single-Celled Organisms so Large?

Still image from: Journey to the Microcosmos: Why Do Bacteria Move Like Vibrating Chaos Snakes?

Still image from: Journey to the Microcosmos: Why Do Microbes Explode Under UV Light?

Still image from: Journey to the Microcosmos: Your Mouth Is a Cave For Microbes

Still image from: Journey to the Microcosmos: Your Screen Is Covered in Human Blood

Close up of a black insect with translucent black wings and black antenna. Caption: our killer can locate her victims remotely.