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  1. Animals

    We are stardust

    Everything making up Earth and what’s now living upon it — from trees and people to our pets and their fleas — owes their origins to the elements forged by ancient stars.

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  2. Animals

    Flower loss doomed the mammoths

    Woolly mammoths roamed the Arctic until about 10,000 years ago. Why they died out may trace to the vanishing of the mostly flowering plants on which they had been dining.

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  3. Environment

    China exports pollution alongside goods

    Many companies have moved the plants that make their products to developing countries, such as China. But the pollution linked to making those products can travel around the world.

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  4. Health & Medicine

    When a nut allergy comes back

    Eating small amounts of peanuts may help people overcome an allergy to the food. But for most people undergoing the treatment, its benefits vanish after they stop eating peanuts.

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  5. Animals

    Birds versus windows

    Buildings in the United States can be deadly obstacles to flying birds. A new study estimates that as many as 1 billion birds die every year after colliding with windows. And low buildings — not skyscrapers — account for most of those deaths.

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  6. Earth

    Mining metals amidst seafloor animals

    Miners may need to get their feet — and everything else — wet as they carefully seek out loads of copper and other valuable natural resources.

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  7. Brain

    Video games can help some people read

    People with dyslexia seem to get a boost from screen time.

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  8. Animals

    Sharks become science helpers

    Jaws may scare beachgoers. But sharks bring a smile to some environmental scientists, who are using the toothy fishes to collect data on the ocean.

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  9. Animals

    Tag, you’re it!

    Biologists now deploy a wide range of technologies to track animals. The data these experts collect reveal insights into the behavior of animals that spend much of their lives out of human eyeshot.

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  10. Animals

    Explainer: Tagging through history

    What started as little metal bands have evolved into high-tech devices — some of which rely on satellites to share their findings.

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  11. Animals

    Watch out for tree-climbing crocs

    What’s that up in the tree? If you live in the right part of the world, it could be a hungry croc.

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  12. Genetics

    Where Native Americans come from

    All tribes seem to derive from the same Asian roots, DNA indicates.

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