Biological Evolution: Unity and Diversity

  1. Humans

    The ultimate genealogical search hunts for our earliest ancestors

    The complex search to identify humans’ most distant cousins is long, complex and far from straightforward. It’s also far from over.

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  2. Animals

    What biologists call a species is becoming more than just a name

    The tree of life — evolution — has been reshaping how scientists name and classify organisms. Some want naming to reflect evolutionary groups even more.

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  3. Animals

    Will the woolly mammoth return?

    Scientists are using genetic engineering and cloning to try to bring back extinct species or save endangered ones. Here’s how and why.

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  4. Animals

    Cloning boosts endangered black-footed ferrets

    A cloned ferret named Elizabeth Ann brings genetic diversity to a species that nearly went extinct in the 1980s.

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  5. Fossils

    Baby pterosaurs may have been able to fly right after hatching

    A bone crucial for lift-off was stronger in hatchling pterosaurs than in adults. The baby reptiles also had shorter, broader wings than grown-ups.

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  6. Animals

    Tiny animals survive 24,000 years in suspended animation

    Tiny bdelloid rotifers awake from a 24,000-year slumber when freed from the Arctic permafrost.

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  7. Microbes

    Explainer: Virus variants and strains

    When viruses become more infectious or better able to survive the body’s immune system, they become a type of variant known as a strain.

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  8. Genetics

    Just a tiny share of the DNA in us is unique to humans

    Some of these tweaks to DNA, however, may have played a role in brain evolution.

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  9. Life

    Even raised by people, wolves don’t tune into you like your dog

    Dog puppies outpace wolf pups at engaging with humans, even with less exposure to people, supporting the idea that domestication changed dogs’ brains.

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  10. Earth

    New beetle species found in fossil poop of this dino relative

    Whole beetles preserved in fossilized reptilian poop suggest that ancient droppings may deserve a closer look.

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  11. Fossils

    Dinosaur families appear to have lived in the Arctic year-round

    Fossils of baby dinosaurs in northern Alaska challenge the idea that northern dinosaurs only spent their summers in the high Arctic.

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  12. Fossils

    Ancient creature revealed as lizard, not a teeny dinosaur

    CT scans of 99-million-year-old fossils of hummingbird-sized specimens trapped in amber reveal a number of lizardlike features.

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