Humans have walked the Earth for 190,000 years, a mere blip in Earth's 4.5-billion-year history. A lot has happened in that time. Earth formed and oxygen levels rose in the foundational years of the Precambrian. The productive Paleozoic era gave rise to hard-shelled organisms, vertebrates, amphibians, and reptiles. Dinosaurs ruled the Earth in the mighty Mesozoic. And 64 million years after dinosaurs went extinct, modern humans emerged in the Cenozoic era. The planet has seen an incredible series of changes—discover them for yourself.

The Innovators Project

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How to Feed Our Growing Planet

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    Feed the World

    National Geographic explores how we can feed the growing population without overwhelming the planet in our food series.

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Phenomena

  • Explaining Stillbirth

    A new study on marmoset monkeys offers some hints about the causes of stillbirth.

    Thursday

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Latest Video

  • The invasive stinkbug infesting a home.

    Fighting the Invasive Stinkbug

    U.S. researchers are teaming up with growers to study the invasive stinkbug's biology and behavior to find effective ways to control their numbers. Video.

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Shop Our Space Collection

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    Be the First to Own Cosmos: A Spacetime Odyssey

    The updated companion book to Carl Sagan's Cosmos, featuring a new forward by Neil deGrasse Tyson is now available. Proceeds support our mission programs, which protect species, habitats, and cultures.

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