Biological Evolution: Unity and Diversity

  1. Animals

    The secret to T. rex‘s incredible biting force is at last revealed

    The force of a T. rex bite was roughly 6 metric tons. A new study points to what’s behind that mighty force.

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  2. Humans

    How scientists can get a better picture of our extinct relatives

    Facial reconstructions of extinct species have historically been more art than science. Some researchers hope to change that.

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  3. Genetics

    Europe’s ancient humans often hooked up with Neandertals

    DNA from ancient bones shows humans and Neandertals were regularly mixing genes by about 45,000 years ago.

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  4. Fossils

    Rhinos, camels and bone-crushing dogs once roamed Nebraska

    Scientists digging into the remnants of an ancient watering hole in Nebraska discovered evidence of an Africa-like savanna, complete with rhinos.

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  5. Life

    Scientists Say: Genus

    A genus is a group of closely related species. It’s the first part of the two-part system called binomial nomenclature, used to name living things.

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  6. Life

    Let’s learn about dogs

    From learning the names of their toys to sniffing out viruses in human sweat, dogs are far more than household pets.

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  7. Plants

    Dinosaur-killing asteroid radically changed Earth’s tropical forests

    The asteroid collision initially reduced the diversity in what had been sunny tropical rainforests. In time, the forests would become permanently darker.

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  8. Fossils

    Scientists Say: Dinosaur

    Dinosaurs emerged between 243 and 233 million years ago. While some died out 66 million years ago, others are still with us — birds.

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  9. Fossils

    An ancient hippo-sized reptile may have been a speedy beast

    An Anteosaurus was a hefty reptile with a large snout. Its fossil skull hints that it may have moved fast for its time.

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  10. Animals

    Science and Indigenous history team up to help spirit bears

    When scientists and Indigenous people work together, their efforts can benefit bears and people.

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  11. Animals

    Explainer: Black bear or brown bear?

    If you see a bear, check size, shape and more to find out what type it is.

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  12. Plants

    Scientists may have finally found how catnip repels insects

    The plant deters mosquitoes and fruit flies by triggering a chemical receptor that, in some animals, senses pain and itch.

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