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  1. Archaeology

    Ancient DNA unveils disparate fates of Ice Age hunter-gatherers in Europe

    Ancient DNA unveils two regional populations that lived in what is now Europe and made similar tools but met different fates.

    By Bruce Bower
  2. Health & Medicine

    Here’s how lemon juice may fend off kidney stones

    Lemon nanoparticles slowed formation of kidney stones in rats. If the sacs work the same way in people, they could help prevent the painful crystals.

    By Meghan Rosen
  3. Paleontology

    The oldest known pollen-carrying insects lived about 280 million years ago

    Pollen stuck to fossils of earwig-like Tillyardembia pushes back the earliest record of potential insect pollinators by about 120 million years.