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Game

Play this game to find out more about the microbes that help and hurt us.
Hands-on

Get some mud and a few other ingredients to build an entire ecosystem for bacteria. 
Game

Test your knowledge about the bacteria and other microbes that live on and in us.
Hands-on

See if you can find the hidden microbes on each coloring page!
Game + Video

Who will be the first to diversify their gut microbiome and win? 
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Your body is more than just you - it is an ecosystem for trillions of tiny microbes. These bacteria, viruses, and oth...
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Scientists often need to examine things that are too small to be seen by the human eye, like bacteria or the tiny cel...
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Dinoflagellates are tiny, one-celled organisms that live in oceans and freshwater ponds, rivers, and streams. Some di...
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Just a century ago, many people died from minor bacterial infections and diseases. A simple cut or strep throat could...
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A firefly's light seems rare and magical. Yet there are many living things that blink, glow, flash, and glitter. The...
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Some of Earth's oddest creatures live arounddeep-sea hydrothermal (hot water) vents. These vents spew plumes of hot,...
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Have you ever seen pond scum -- that thick, smelly layer of slime floating on the surface of the water? That's probab...
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All the DNA in a cell is called a genome. Your body contains trillions of copies of the human genome -- one in each o...
Game

All aboard! Hop on a submersible and explore an amazing diversity of life at the ocean floor.
Video

Conservation biologist Ana Luz Porzecanski answers kids' questions.
¡TAMBIÉN EN ESPAÑOL!
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Susan Perkins has always loved being outside. As a child, she played in the woods and took field notes about birds an...
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It started with a cough and stuffy nose. But now you're achy, feverish, and exhausted. You just might have influenza,...
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Plankton are the microscopic organisms of the sea. Just as plants form the basis for the ecosystem on land, phytoplan...
Reading

Explore this family tree of living things on Earth.
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Have you ever caught a firefly on a warm summer night? Chances are it was a common eastern firefly (Photinus pyralis)...
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Bubbling hot springs. Antarctic ice. Deep ocean trenches. The Himalayan peaks. Few organisms can live in any of these...
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Many scientists have joined forces on the Human Genome Project. Their goal is to figure out the order of all "DN...
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When she was a kid, Ana explored the landscapes of rural Uruguay and Brazil and the many plants and animals that live...
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Giant puffballs aren't your typical mushrooms.
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Imagine you are a marine biologist, traveling far beneath the ocean surface in a submersible.
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More than four thousand islands—including one big island—make up this nation in the Caribbean Sea.
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To try to piece together how organisms are related, scientists use cladistics.
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This large dark bird is unmistakable soaring in the air along the coast.
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The snowy egret is a beautiful sight. An adult egret is distinguished by its dark slender beak, long black legs, and...
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Many people have seen the beautiful spiral triton trumpet shell. Unfortunately, most people can see these brown and w...
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Most mammals that live on land use their legs to get around. But the white-handed gibbon relies mostly on its arms. U...
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There are more than 250 kinds of vipers, a family of poisonous snakes. The largest of all is the gabon viper.
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The Asian elephant is one of the largest land mammals in the world. Some people believe that elephants feel joy and s...
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The king cobra is the largest venomous snake in the world. Whether slithering on land, climbing trees, or swimming, i...
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The leatherback is the world's largest turtle. Unlike the bony exterior of other sea turtles, the exterior of the lea...
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Cassava is one tough plant because it can grow in poor and unfertile soil in most tropical environments. Cassava is a...
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Most people know red and black spotted ladybird beetles as friendly insects that are fun to pick up and watch fly awa...
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If you looked at the contents of a vacuum cleaner bag with a microscope, you'd probably find millions of tiny creatur...
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You might think that all mosquitoes are alike, but did you know that there are actually about 2,500 different kinds?...
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Although the rosy periwinkle stands only one foot tall, in the world of medicine it's a giant.
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This beautiful tortoise lives in the deserts of Madagascar, an island off the coast of Africa. This reptile gets its...
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A rotting log is a mighty tasty meal -- if you're a termite. Termites not only eat wood, some kinds live in it, too....
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Vietnam is a country of amazing biodiversity, including many rare and unusual species. One fascinating example is the...
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For centuries, orange roughy went mostly unnoticed by humans. These fish thrived in the dark, the cold, and the inten...
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Tipping the scales at more than 7 pounds, the Goliath is the largest frog in the world. Just two of these frogs weigh...
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It only seems like the world's entire ant population attends your picnics.
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Are these rare and colorful creatures flowering plants or animals?
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With their white bellies and dark backs, dolphins can be found jumping above the water, swimming alongside fishing sh...
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Ornithologists, or scientists who study birds, want to prevent the forests of the Pacific Northwest from being choppe...
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The St. Vincent parrot makes its home on the tropical island of St. Vincent in the Caribbean. These parrots are cover...
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The American crocodile has lived on Earth for millions of years, but today their numbers are rapidly declining becaus...
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The Tibetan antelope, also known as "chiru," is one of the most beautiful mammals in the world.
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The hellbender is one of the largest salamanders in North America.
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The Komodo dragon lumbers through the forest on its thick, stocky legs. It sways its head back and forth, flicking it...
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The mountain gorilla lives high up in the forests of east central Africa.
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Based on fossils of ancient dragonflies, we know these winged insects have been soaring around for at least 300 milli...
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Think of giant kelp as the Godzilla of the seaweeds.
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The Portuguese man-of-war is actually a floating colony of individuals called polyps that are all dependent on each o...
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California condors are the largest birds in North America. Like all vultures, condors are carrion-eaters. This means...
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The electric eel is long and narrow like an eel, but it is actually not an eel at all. In fact, electric eels are pro...
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New Caledonia, a tiny island east of Australia, is the only place where an unusual bird called the kagu is found. Abo...
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What do we have in common with sharks, bluebirds, lizards, and toads? We are all vertebrates, or animals with backbon...
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Some exotic creatures lurk in the polar seas, but perhaps none is more bizarre than the giant sea spider.
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It's easy to see how the starfish got its name -- with their pointed arms, these creatures look like stars fallen to...
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The whooping crane is known as the tallest bird in North America. This long legged creature has been struggling to su...
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Not all spiders spin webs to catch their meals. When night falls in Australia, the white-tailed spider hunts its prey...