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  1. Physics

    Exploding stars scattered traces of iron over Antarctic snow

    Researchers melted half a ton of snow to find just 10 atoms of a radioactive variety of iron.

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  2. Life

    How these tiny insect larvae leap without legs

    High-speed filming reveals how a blob of an insect can leap more efficiently than it crawls.

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  3. Earth

    The worst wildfires can send smoke high enough to affect the ozone layer

    Pyrocumulonimbus clouds can send soot and other damaging particles 23 kilometers into the air

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  4. Physics

    50 years ago, Fermilab turned to bubbles

    The National Accelerator Laboratory, now called Fermilab, used to have a bubble chamber to study particles.