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The Arthur Ross Terrace will be closed this morning, Tuesday, October 21, for a private cultural observance. You many observe smoke and/or fire coming from the Terrace at that time. The FDNY has been notified in advance, and all safety precautions are in place. The Terrace will reopen at 1 pm.

Tree of Life

Photos: (A special thanks to the California Academy of Sciences for their generous photo contribution); Introductory page American robin, Asian multicolored ladybird beetle, crocodile skink, Jeffery pine, long-tailed salamander, red lionfish, robust lancetooth, smooth flower coral, Salmonella enteriditis: refer to Organism Pages credits below; Joel Cracraft: courtesy of Joel Cracraft, AMNH Cladogram page DNA: courtesy of Denis Finnin, AMNH, The Genomic Revolution Exhibit animals: AMNH, spectrum of life in Hall of Biodiversity; Bilateria: formosan subterranean termite: courtesy of Scott Bauer, Agricultural Research Service; vertebrates, tetrapods, sauropsids, diapsids: AMNH, Hall of Vertebrate Origins; How to Read a Cladogram page: fruit photos excluding watermelon: AMNH; watermelon: courtesy of Ken Hammond, U.S. Department of Agriculture; Organism pages: True Bacteria: Escherichia coli: courtesy of Michael Elowitz Nodularia: Hans Paerl, author. Licensed for use, ASM MicrobeLibrary; Salmonella enteriditis: courtesy of U.S. Department of Agriculture; Staphylococcus: courtesy of Louis de Vos, BIODIC; Protoctists: Acetabularia, Amoeba proteus, Navicula, Paramecium, Tetrahymena pyriformis: courtesy of Louis de Vos, BIODIC Macrocystis; pyrifera: courtesy of Gary McCarthy, underwater-photos; Peridinium gatunese: courtesy of Susan Carty; Green plants: American rockbrake: courtesy of Larry Blakely, California Academy of Sciences; boojum tree: courtesy of Jules Strauss, California Academy of Sciences; cassava plant: courtesy of Roger Harris, Jungle Photos; Jeffrey pine: courtesy of Robert Potts, California Academy of Sciences; rosy periwinkle: courtesy of James A. Manhart; yellow starthistle: courtesy of Peggy Greb, Agricultural Research Service; Fungi: giant puffball, hygroscopic earthstar, the sickener, turkey tails, woolly chanterelle: Br. Alfred Brousseau, Saint Mary's College, California Academy of Sciences; jelly bellies, witch's Butter: courtesy of Dr. Robert Thomas and Margaret Orr, California Academy of Sciences; penicillium: courtesy of Center for Drug Evaluation and Research, FDA; Cnidarians: California cup coral: courtesy of Gerald and Buff Corsi, California Academy of Sciences; eggyolk jellyfish: courtesy of Garry McCarthy, underwater-photos; smooth flower coral, gorgonian coral: AMNH, spectrum of life in Hall of Biodiversity; portuguese man-of-war: courtesy of Dr. Thomas M. Scott, Florida Geological Survey; swimming anemone, tube anemone: courtesy of Garry McCarthy, California Academy of Sciences; symmetrical brain coral: courtesy of Eugene Weber, California Academy of Sciences; Mollusks: cuttlefish, chambered nautilus: AMNH, spectrum of life in Hall of Biodiversity; greater blue-ringed octopus: courtesy of Roy Caldwell; opalescent inshore squid, purple ring top snail, spanish shawl nudibranch: courtesy of Garry McCarthy, underwater photos; robust lancetooth: courtesy of Gerald and Buff Corsi, California Academy of Sciences; Pacific pearl oyster: courtesy of AMNH Department of Library Services, #K15574; Arthropods: Asian multicolored ladybird beetle, formosan subterranean termite, leaf-cutting ant, Mediterranean fruit fly, mustached mud bee, varroa mite: courtesy of Scott Bauer, Agricultural Research Service; owl butterfly, white-tailed spider: AMNH; pseudoscorpion: courtesy of Dr. Antonio J. Ferreira, California Academy of Sciences; Mexican redknee tarantula, sally lightfoot crab, ten-spot skimmer dragonfly: courtesy of Gerald and Buff Corsi, California Academy of Sciences; yellow fever mosquito: courtesy of Agricultural Research Service; Echinoderms: blood star, sand dollar, sea bat: courtesy of Gerald and Buff Corsi, California Academy of Sciences; slate pencil urchin: courtesy of Eugene Weber, California Academy of Sciences; sunflower seastar: courtesy of Sherry Ballard, California Academy of Sciences; Ray-finned fish: electric eel: courtesy of Alan Hill, fishbase; french angelfish: courtesy of Eugene Weber, California Academy of Sciences; Pacific seahorse, red lionfish: courtesy of Gerald and Buff Corsi, California Academy of Sciences; radial firefish: courtesy of H. Vannoy Davis, California Academy of Sciences; Amphibia: American toad, blue poison frog, long-tailed salamander, red spotted newt, white's treefrog: courtesy of John White, California Academy of Sciences; goliath frog: AMNH, Hall of Reptiles; hellbender: courtesy of Brad Moon, California Academy of Sciences; Mammals: caracal, giant panda, giraffe, green acouchi, warthog: courtesy of John White, California Academy of Sciences; aye-aye: AMNH, Hall of Biodiversity; human: AMNH; orca: courtesy of AMNH Department of Library Services, #1513; Turtles & Tortoises: aladabra tortoise, map turtle: courtesy of John White, California Academy of Sciences; Indian star tortoise, radiated tortoise: AMNH, spectrum of life in Hall of Biodiversity; leatherback sea turtle: courtesy of AMNH Department of Library Services, #1927; Lizards & Snakes: corn snake, crocodile skink, Eastern worm snake, Northern redbelly snake: courtesy of John White, California Academy of Sciences; Egyptian spiny-tailed lizard: courtesy of AMNH Department of Library Services, #K11268; king cobra: courtesy of Duncan McCrae Herpafauna Kings; alligator lizard: courtesy of AMNH Department of Library Services, #K11592; Komodo dragon: courtesy of Gerald and Buff Corsi, California Academy of Sciences; tusked chameleon: California Academy of Sciences; Birds & Crocodilians: American crocodile: courtesy of Gerald and Buff Corsi, California Academy of Sciences; American robin, Morelet's crocodile, Schneider's dwarf caiman: courtesy of John White, California Academy of Sciences; California condor: courtesy of David Clendenen, U.S. Fish and Wildlife Service; emu: courtesy of Larry Rana, U.S. Department of Agriculture; greater bird of paradise: courtesy of AMNH Department of Library Services, #pk18; snowy owl: courtesy of AMNH Department of Library Services, #pk372; whooping crane: courtesy of Gloria Hopkins

What Do You Know About Poison? Meet the OLogist: Mandë Holford Meet the OLogist: Mark Siddall
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Hall of Fame

Sharks are more ancient than dinosaurs.

An adult triceratops weighed more than the largest modern elephant.

The Western United States is one of the best places in the world to find dinosaur fossils. 

Bio Poll

Photos: American toad, Asian multicolored ladybeetle, blood star, blue poison frog, blue-ring top snail, boojum tree, formosan subterranean termite, french angelfish, greater bird of paradise, green acouchi, hygroscopic earthstar, long-tailed salamander, jelly bellies, Mexican redknee tarantula, owl butterfly, radiated tortoise, red spotted newt, rosy periwinkle, sally lightfoot crab, ten spot skimmer dragonfly, the sickener, tusked chameleon, varroa mite, whitespotted boxfish, white's treefrog, witch's butter, yellow fever mosquito: refer to Tree of Life Organism Pages imagery credits; aye-aye: courtesy of Connie Bransilver, Duke University Primate Center buffalo trunkfish (fishes swim): courtesy of John White, California Academy of Sciences; butterfly, city, desert, forest, garbarge, hummingbird, ocean, pigeon, plants, squirrel, volunteer your time, white-tailed spider: AMNH; Carolina parakeet, horned lizard: courtesy of AMNH Department of Library Services; coral: courtesy of Discovery Channel Online; giant squid: AMNH, Hall of Biodiversity; ladybug: courtesy of Albert P. Bekker, California Academy of Sciences; passenger pigeon: AMNH; halls praying mantis: courtesy of Gladys Lucille Smith, California Academy of Sciences; Illustrations: Dzanga-Sangha: Laura Friedman; great auk: courtesy of AMNH Department of Library Services, #6266, extinct 1844. By Charles Hamilton Smith, from Charles Hamilton Smith,Original Drawings, 1795-1859. 23 vols; laughing owl: courtesy of AMNH Department of Library Services, #6253, extinct New Zealand, c. 1914. By John G. Keulemans, from G. D. Rowley, Ornithological miscellany, vol. 1. London: 1875.; O'ahu 'O'o: courtesy of AMNH Department of Library Services, #6286, By John G. Keulemans, from Lionel Walter Rothschild, The avifauna of Laysan and the neighbouring islands, London, 1893-1900; recycle: Eric Hamilton seaweed, soybeans, olive branch, cinnamon: Patricia Wynne

Make your opinion count!

Bio-Benefits

Illustrations: Eric Hamilton

Did you know that biodiversity provides us with things that we need?

Biodiversity Books

Explore biodiversity with these 12 books.

Chasing Spiders Down Under

Photos: Introductory page: rosy periwinkle: courtesy of James A. Manhart shell: courtesy of Steve Thurston, AMNH; Creatures of the Reefs: photos of Paula Mikkelsen and Dan Brumbaugh: courtesy of Discovery Channel Online shell photos: courtesy of Steve Thurston, AMNH; Magnificent Madagascar: Chris Raxworthy (top): AMNH Chris Raxworthy (middle): courtesy of Chris Raxworthy Mimic-ants: courtesy of Discovery Channel Online; Chasing Spiders Down Under: photos of Valdimir Ovtsharenko: courtesy of Discovery Channel Online; Illustrations: Creatures of the Reefs: Steve Thurston; Magnificent Madagascar, Chasing Spiders Down Under: Barrett Klein

See how an arachnologist studies these eight-legged creatures in Austrailia.

Creatures of the Reef

Photos: Introductory page: rosy periwinkle: courtesy of James A. Manhart shell: courtesy of Steve Thurston, AMNH; Creatures of the Reefs: photos of Paula Mikkelsen and Dan Brumbaugh: courtesy of Discovery Channel Online shell photos: courtesy of Steve Thurston, AMNH; Magnificent Madagascar: Chris Raxworthy (top): AMNH Chris Raxworthy (middle): courtesy of Chris Raxworthy Mimic-ants: courtesy of Discovery Channel Online; Chasing Spiders Down Under: photos of Valdimir Ovtsharenko: courtesy of Discovery Channel Online; Illustrations: Creatures of the Reefs: Steve Thurston; Magnificent Madagascar, Chasing Spiders Down Under: Barrett Klein

See how a scientist studies mollusks in the tropical waters of the Bahamas.

Draw a Monarch

Photos: AMNH; Illustrations: Ivy Rutsky

Learn how to create a scientific illustration of a monarch butterfly in a few easy steps!

Welcome to the Dzanga-Sangha

Photos: Visiting Dzanga-Sangha: Geralyn Abinader: courtesy of Geralyn Abinader, AMNH; Joel Carcraft: courtesy of Joel Cracraft, AMNH; Laura Friedman: courtesy of Laura Friedman, AMNH; Tamara Giles-Vernick: courtesy of Tamara Giles-Vernick; Rebecca Hardin: courtesy of Rebecca Hardin; Michelle Kisliuk: courtesy of Michelle Kisliuk; Sound: Natural sounds: AMNH, courtesy of Exhibition Department; Music: Michelle Kisliuk, Seize the Dance! BaAka Musical Life and the Ethnography of Performance @ 1998 Oxford University Press, Inc. Used by permission. All rights reserved.; Illustrations: Laura Friedman

Play this game to explore the animals and plants in an African rain forest.

Endangered Species Game

Photos: AMNH; Illustrations: Patricia Wynne

Play this game to find out how a law protects animals and plants.

Feed the Birds

Photos: AMNH

Make your own bird feeder and record your observations in a bird journal.

Global Grocery

Illustrations: Peter Spacek, Andy Levine

How far have your groceries traveled? Find out!

Going Going Gone

Photos: How do you know when a species has become extinct?: Pacific seahorse: courtesy of Gerald and Buff Corsi, California Academy of Sciences; Illustrations: Introductory page: letters and their animations: Eric Hamilton; great auk: courtesy of AMNH Department of Library Services, #6266, extinct 1844. By Charles Hamilton Smith, from Charles Hamilton Smith, Original Drawings, 1795-1859. 23 vols; laughing owl: courtesy of AMNH Department of Library Services, #6253, extinct New Zealand, c. 1914. By John G. Keulemans, from G. D. Rowley, Ornithological miscellany, vol. 1. London: 1875.; O'ahu 'O'o: courtesy of AMNH Department of Library Services, #6286, By John G. Keulemans, from Lionel Walter Rothschild, The avifauna of Laysan and the neighbouring islands, London, 1893-1900; endangered ticker animals: Patricia J. Wynne

Why are many animal and plant species dying out forever?

How to Help Biodiversity

Find out how biodiversity depends on you.

Life in the City

Illustrations: Barrett Klein

Magnificent Madagascar

Photos: Introductory page: rosy periwinkle: courtesy of James A. Manhart shell: courtesy of Steve Thurston, AMNH; Creatures of the Reefs: photos of Paula Mikkelsen and Dan Brumbaugh: courtesy of Discovery Channel Online shell photos: courtesy of Steve Thurston, AMNH; Magnificent Madagascar: Chris Raxworthy (top): AMNH Chris Raxworthy (middle): courtesy of Chris Raxworthy Mimic-ants: courtesy of Discovery Channel Online; Chasing Spiders Down Under: photos of Valdimir Ovtsharenko: courtesy of Discovery Channel Online; Illustrations: Creatures of the Reefs: Steve Thurston; Magnificent Madagascar, Chasing Spiders Down Under: Barrett Klein

What kind of wildlife will a herpotologist meet on this tropical island?

Make Your Own Biodiversity Stationery

Illustrations: Eric Hamilton

Send a note to a friend with these colorful letterheads.

Meet the OLogist: Eleanor Sterling

Photos: aye-aye (full body): AMNH, Hall of Biodiversity aye-aye (close-up of head): courtesy of Connie Bransilver, Duke University Primate Center aye-aye nuts: AMNH, courtesy of Eleanor Sterling baboon: courtesy of AMNH Department of Library Services, #K14396 Eleanor in front of Hall of Biodiversity: courtesy of Denis Finnin, AMNH elephant, sea lions, Columbia University, Joshua Tree National Park: AMNH Eleanor in field, Eleanor being athletic, Eleanor working with others, tent: courtesy of Center for Biodiversity and Conservation, AMNH peacock: courtesy of AMNH Department of Library Services, K15531 ruffed lemur: courtesy of Duke University Primate Center scarf: courtesy of Meg Carlough

Explore how Eleanor, Ismael, Keally, and Marco are protecting the world's animals and plants.

Meet the Biodiversity OLogists

Photos: Eleanor Sterling pages aye-aye (full body): AMNH, Hall of Biodiversity aye-aye (close-up of head): courtesy of Connie Bransilver, Duke University Primate Center aye-aye nuts: AMNH, courtesy of Eleanor Sterling baboon: courtesy of AMNH Department of Library Services, #K14396 Eleanor in front of Hall of Biodiversity: courtesy of Denis Finnin, AMNH elephant, sea lions, Columbia University, Joshua Tree National Park: AMNH Eleanor in field, Eleanor being athletic, Eleanor working with others, tent: courtesy of Center for Biodiversity and Conservation, AMNH peacock: courtesy of AMNH Department of Library Services, K15531 ruffed lemur: courtesy of Duke University Primate Center scarf: courtesy of Meg Carlough; Ismael page: Ismael: AMNH; chicks: courtesy of Keith Weller, Agricultural Research Service; Keally page: all photos: courtesy of Keally; Marco page: photos of Marco: courtesy of Marco; sea lion: AMNH

Find out where Rob, Emily, Logan, and Seth have followed their born curiosity.

Saving Species

Photos: Introductory page: rosy periwinkle: courtesy of James A. Manhart shell: courtesy of Steve Thurston, AMNH; Creatures of the Reefs: photos of Paula Mikkelsen and Dan Brumbaugh: courtesy of Discovery Channel Online shell photos: courtesy of Steve Thurston, AMNH; Magnificent Madagascar: Chris Raxworthy (top): AMNH Chris Raxworthy (middle): courtesy of Chris Raxworthy Mimic-ants: courtesy of Discovery Channel Online; Chasing Spiders Down Under: photos of Valdimir Ovtsharenko: courtesy of Discovery Channel Online; Illustrations: Creatures of the Reefs: Steve Thurston; Magnificent Madagascar, Chasing Spiders Down Under: Barrett Klein

Take a world-wide tour of biodiversity with three scientists.

The Legend of Flying Frog

Illustrations: Eric Hamilton

Invent a story about an endangered species. Then draw and write about it!

Tree of Life

Photos: (A special thanks to the California Academy of Sciences for their generous photo contribution); Introductory page American robin, Asian multicolored ladybird beetle, crocodile skink, Jeffery pine, long-tailed salamander, red lionfish, robust lancetooth, smooth flower coral, Salmonella enteriditis: refer to Organism Pages credits below; Joel Cracraft: courtesy of Joel Cracraft, AMNH Cladogram page DNA: courtesy of Denis Finnin, AMNH, The Genomic Revolution Exhibit animals: AMNH, spectrum of life in Hall of Biodiversity; Bilateria: formosan subterranean termite: courtesy of Scott Bauer, Agricultural Research Service; vertebrates, tetrapods, sauropsids, diapsids: AMNH, Hall of Vertebrate Origins; How to Read a Cladogram page: fruit photos excluding watermelon: AMNH; watermelon: courtesy of Ken Hammond, U.S. Department of Agriculture; Organism pages: True Bacteria: Escherichia coli: courtesy of Michael Elowitz Nodularia: Hans Paerl, author. Licensed for use, ASM MicrobeLibrary; Salmonella enteriditis: courtesy of U.S. Department of Agriculture; Staphylococcus: courtesy of Louis de Vos, BIODIC; Protoctists: Acetabularia, Amoeba proteus, Navicula, Paramecium, Tetrahymena pyriformis: courtesy of Louis de Vos, BIODIC Macrocystis; pyrifera: courtesy of Gary McCarthy, underwater-photos; Peridinium gatunese: courtesy of Susan Carty; Green plants: American rockbrake: courtesy of Larry Blakely, California Academy of Sciences; boojum tree: courtesy of Jules Strauss, California Academy of Sciences; cassava plant: courtesy of Roger Harris, Jungle Photos; Jeffrey pine: courtesy of Robert Potts, California Academy of Sciences; rosy periwinkle: courtesy of James A. Manhart; yellow starthistle: courtesy of Peggy Greb, Agricultural Research Service; Fungi: giant puffball, hygroscopic earthstar, the sickener, turkey tails, woolly chanterelle: Br. Alfred Brousseau, Saint Mary's College, California Academy of Sciences; jelly bellies, witch's Butter: courtesy of Dr. Robert Thomas and Margaret Orr, California Academy of Sciences; penicillium: courtesy of Center for Drug Evaluation and Research, FDA; Cnidarians: California cup coral: courtesy of Gerald and Buff Corsi, California Academy of Sciences; eggyolk jellyfish: courtesy of Garry McCarthy, underwater-photos; smooth flower coral, gorgonian coral: AMNH, spectrum of life in Hall of Biodiversity; portuguese man-of-war: courtesy of Dr. Thomas M. Scott, Florida Geological Survey; swimming anemone, tube anemone: courtesy of Garry McCarthy, California Academy of Sciences; symmetrical brain coral: courtesy of Eugene Weber, California Academy of Sciences; Mollusks: cuttlefish, chambered nautilus: AMNH, spectrum of life in Hall of Biodiversity; greater blue-ringed octopus: courtesy of Roy Caldwell; opalescent inshore squid, purple ring top snail, spanish shawl nudibranch: courtesy of Garry McCarthy, underwater photos; robust lancetooth: courtesy of Gerald and Buff Corsi, California Academy of Sciences; Pacific pearl oyster: courtesy of AMNH Department of Library Services, #K15574; Arthropods: Asian multicolored ladybird beetle, formosan subterranean termite, leaf-cutting ant, Mediterranean fruit fly, mustached mud bee, varroa mite: courtesy of Scott Bauer, Agricultural Research Service; owl butterfly, white-tailed spider: AMNH; pseudoscorpion: courtesy of Dr. Antonio J. Ferreira, California Academy of Sciences; Mexican redknee tarantula, sally lightfoot crab, ten-spot skimmer dragonfly: courtesy of Gerald and Buff Corsi, California Academy of Sciences; yellow fever mosquito: courtesy of Agricultural Research Service; Echinoderms: blood star, sand dollar, sea bat: courtesy of Gerald and Buff Corsi, California Academy of Sciences; slate pencil urchin: courtesy of Eugene Weber, California Academy of Sciences; sunflower seastar: courtesy of Sherry Ballard, California Academy of Sciences; Ray-finned fish: electric eel: courtesy of Alan Hill, fishbase; french angelfish: courtesy of Eugene Weber, California Academy of Sciences; Pacific seahorse, red lionfish: courtesy of Gerald and Buff Corsi, California Academy of Sciences; radial firefish: courtesy of H. Vannoy Davis, California Academy of Sciences; Amphibia: American toad, blue poison frog, long-tailed salamander, red spotted newt, white's treefrog: courtesy of John White, California Academy of Sciences; goliath frog: AMNH, Hall of Reptiles; hellbender: courtesy of Brad Moon, California Academy of Sciences; Mammals: caracal, giant panda, giraffe, green acouchi, warthog: courtesy of John White, California Academy of Sciences; aye-aye: AMNH, Hall of Biodiversity; human: AMNH; orca: courtesy of AMNH Department of Library Services, #1513; Turtles & Tortoises: aladabra tortoise, map turtle: courtesy of John White, California Academy of Sciences; Indian star tortoise, radiated tortoise: AMNH, spectrum of life in Hall of Biodiversity; leatherback sea turtle: courtesy of AMNH Department of Library Services, #1927; Lizards & Snakes: corn snake, crocodile skink, Eastern worm snake, Northern redbelly snake: courtesy of John White, California Academy of Sciences; Egyptian spiny-tailed lizard: courtesy of AMNH Department of Library Services, #K11268; king cobra: courtesy of Duncan McCrae Herpafauna Kings; alligator lizard: courtesy of AMNH Department of Library Services, #K11592; Komodo dragon: courtesy of Gerald and Buff Corsi, California Academy of Sciences; tusked chameleon: California Academy of Sciences; Birds & Crocodilians: American crocodile: courtesy of Gerald and Buff Corsi, California Academy of Sciences; American robin, Morelet's crocodile, Schneider's dwarf caiman: courtesy of John White, California Academy of Sciences; California condor: courtesy of David Clendenen, U.S. Fish and Wildlife Service; emu: courtesy of Larry Rana, U.S. Department of Agriculture; greater bird of paradise: courtesy of AMNH Department of Library Services, #pk18; snowy owl: courtesy of AMNH Department of Library Services, #pk372; whooping crane: courtesy of Gloria Hopkins

Explore this family tree of living things on Earth.

Visiting Dzanga-Sangha

Photos: Visiting Dzanga-Sangha: Geralyn Abinader: courtesy of Geralyn Abinader, AMNH; Joel Carcraft: courtesy of Joel Cracraft, AMNH; Laura Friedman: courtesy of Laura Friedman, AMNH; Tamara Giles-Vernick: courtesy of Tamara Giles-Vernick; Rebecca Hardin: courtesy of Rebecca Hardin; Michelle Kisliuk: courtesy of Michelle Kisliuk; Sound: Natural sounds: AMNH, courtesy of Exhibition Department; Music: Michelle Kisliuk, Seize the Dance! BaAka Musical Life and the Ethnography of Performance @ 1998 Oxford University Press, Inc. Used by permission. All rights reserved.; Illustrations: Laura Friedman

Read stories of people who visited this African rain forest.

Web of Life

Photos: AMNH

Play the Web of Life game to discover how all the players in an ecosystem depend on each other to survive. As you play, you'll come up with the connections between different species and their environments.

What Do You Know About Biodiversity?

Photos: photos in animal montage: AMNH, spectrum of life in Hall of Biodiversity; European starling: courtesy of Dr. W. Dan Sudia, FLMNH Photo Gallery of Southeastern U.S. Birds; African land snail: courtesy of Duane Meier, Honolulu Zoo, Wicked Willy photo gallery; cat: AMNH; orca: courtesy of AMNH Department of Library Services, #1513

Test your knowledge about the variety of life on Earth with this quiz.

What's the Big Idea About Biodiversity?

Photos: chestnut-breasted finch: courtesy of AMNH Department of Library Services, #K15252; gouldian finch: courtesy of AMNH Department of Library Services, #K15251; red-browed finch: courtesy of AMNH Department of Library Services, #K15249; hummingbird, forest, dinosaur skeleton, zebra mussels, bald eagles, butterfly garden: AMNH; suburban sprawl: courtesy of Lynn Betts, USDA Natural Resources Conservation Service; shoes: courtesy of Meg Carlough; Illustrations: medicine, reduce, reuse recylce, spider web: Eric Hamilton; dodo: courtesy of AMNH Department of Library Services, #6261, Jean Pretre, from Henri-Marie Ducrotay de Blainville, Nouvelles annales du Museum d'Histoire Naturelle, Paris:

It's the differences in this world that make all the difference!

What's This?

Photos: Frozen Tissue Collection: All specimens from the Frozen Tissue Collection, frilled leaf-tailed gecko: AMNH / Denis Finnin cryovat, test tubes: AMNH / Craig Chesek humpback whale: John J. Mosesso / NBII coyote: AMNH; Gold: gold sheet mouflon, miniature sacrificial figurine, Spanish coins: AMNH / Craig Chesek Inca necklace: AMNH / Denis Finnin Eureka Bar: AMNH / Roderick Mickens astronaut in space: NASA computer chip: stock.xchng; Leeches: jaw: Eye of Science / Photo Researchers, Inc. bite mark: Geoff Tompkinson / Photo Researchers, Inc. leech feeding on snail: Edward Hendrycks, reproduce courtesy of the Canadian Museum of Nature leeches before and after blood meal, leeches on foot, American Medicinal Leech, Malagobdella vagans, Mark Siddall in swamp: courtesy of Mark Siddall; Dioramas: AMNH / Roderick Mickens; Mythic Creatures: All photos courtesy of American Museum of Natural History; Vietnam: pygmi loris, Tonkin snub-nosed monkey: Tilo Nadler / Frankfurt Zoological Society Oriental pit viper: Robert W. Murphy / Royal Ontario Museum scientists with camera trap: Kevin Frey / AMNH Center for Biodiversity and Conservation saola: European Commission, Social Forestry and Nature Conservation

Can you tell, just by looking at it, if a pygmy loris is a rodent, a primate, or a raccoon's relative? Put your knowledge of Vietnam's animals to the test.

Meet the OLogist: Felicity Arengo

Watch these videos to explore Felicity's work as a conservation biologist.

In Pictures: Fascinating Fish

Photos: &copy AMNH/Melanie Stiasnny

Check out these fascinating fish from Africa's lower Congo River.

Around the World with DNA

Photos: George Barrowclough: courtesy of R.J. Gutierrez; Humpback whales, Howard Rosenbaum: courtesy of Peter J. Ersts, Center for Biodiversity and Conservation, AMNH; Owl: John and Karen Hollingsworth, U.S. Fish and Wildlife Service; Yael Wyner: courtesy of Yael Wyner; Joel Cracraft: courtesy of Joel Cracraft; Sumatran Tiger: courtesy of Jessie Cohen, Smithsonian's National Zoo; Lemur: courtesy of Duke University Primate Center; Daniela Calcagnotto: Courtesy of Daniela Calcagnotto; Pacu: courtesy of Leonard Lovshin, Department of Fisheries and Allied Aquacultures, Auburn University; St. Vincent parrots, Mike Russello: courtesy of Mike Russello; Illustrations: Louis Pappas, Steve Thurston, Eric Hamilton

Travel around the world with museum scientists: from Madagascar to the Western U.S. to the island of Sumatra in Indonesia.

Dive Into Worlds Within the Sea

Photos: Luke photo: courtesy of Luke; Illustrations: Sean Murtha

Find out what lives in the deep sea, coral reef, and continental shelf?

Meet the OLogist: George Amato

Tracking a gorilla can get hairy. Literally. Just ask George Amato.

Make Your Own Creatures of Light

Create land and sea animals that "glow" in the dark!

The Butterfly Kingdom

This is a collaborative project between the American Museum of Natural History (AMNH) and the National Museum of Natural Science in Taiwan (NMNS) to share and exchange their digital resources and extend their outreach to global audiences.Photos: © National Museum of Natural Science Taiwan

Find out about Taiwan's fascinating fluttering insects.

DNA Detective

Photos: George Amato, Lab machines: courtesy of Denis Finnin, AMNH; Caimans: courtesy of Santos Breyer, Crocodilian Photo Gallery; Elephant: courtesy of Jason Lelchuk, AMNH; American Crocodile: courtesy of Julio Caballeros Sigme, Florida Museum of Natural History; Tibetan Antelope: courtesy of George B. Schaller; Products: courtesy of Meg Carlough

Join scientist George Amato on his quest to stop criminals smuggling illegal goods.

Keeping a Field Journal

Illustrations: Animals: Steve Thurston; Journal Page: Carl Mehling

Want to figure out the wildlife in your area and the impact of genetics? Start a field journal, and track how your favorite critter looks and behaves.

It Takes All Kinds to Make a World

Photos: Introductory Page: Melanie Stiassny: courtesy of AMNH, Denis Finnin; It All Began in the Oceans: Mark Siddall: courtesy of AMNH, Denis Finnin; Diversity of Life on Earth: Blue-green alga: courtesy of MIT, Department of Biology, Claire Ting, Giant kelp: courtesy of NOAA, Extreme microbe: courtesy of Universitaet Regensburg, Lehrstuhl Fuer Mikrobiologie, Karl O. Stetter, Tubeworm: courtesy of Pennsylvania State University, Charles Fisher, Spiny lobster: courtesy of Smithsonian Institution, M.G. Harasewych, Red mangrove: courtesy of OAR, National Undersea Research Program, Fungus: courtesy of Steve Newell, Diatom: courtesy of University of Michigan, M.J. Wynne, White marlin: courtesy of Food and Agriculture Organization of the United Nations; A Whale of a Tale: Blue whale: courtesy of AMNH, Denis Finnin; Illustrations; Jim Steck

The ocean's one diverse place. Take the surfboard challenge, and ride the waves of biodiversity!

Meet the OLogist: Mark Siddall

Why does Mark want to study bright red mushrooms? Find out!

Meet the OLogist: Mandë Holford

Find out why Alice in Wonderland is Mandë's favorite poison story.

Meet the OLogist: Robert Voss

Can poisons be used for good? Yes, and Robert will tell you why.

What Do You Know About Poison?

Will it kill you or cure you? Test your knowledge with this quiz.

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