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  1. Animals

    Rainforest frogs flourish with artificial homes

    A rainforest frog population grew by about 50 percent when scientists built pools for tadpoles that mimic puddles made by other animals.

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  2. Astronomy

    Asteroids or planets might trigger a supernova

    Rocky debris falling onto a white dwarf might trigger some supernovas.

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  3. Ecosystems

    Termite mound paradises help buffer dry land against climate change

    Landscapes dotted by Africa’s great termite mounds look on the verge of turning into desert but are, in fact, more resilient.

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  4. Earth

    Ice ages boost production of new ocean crust

    When sea levels drop during ice ages, magma at mid-ocean ridges surges.