Life
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Life
Bee genes may drive them to adventure
Scouting behavior linked to certain molecules in insect brains.
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Life
Exercise brings on DNA changes
Workouts and caffeine can turn on genes that make energy-regulating proteins.
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Life
Sawfish don’t saw
Spiked snouts whack prey to the bottom, helping the predator better get its mouth around dinner.
By Susan Milius -
Life
Fossil pushes back land-animal debut
Creatures first squished mud through their five toes millions of years earlier than previously believed.
By Devin Powell -
Physics
Plants’ reproductive weaponry unfurled
Botanical tricks include adhesion and bubbles to spread their spores into the environment.
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Life
After a breakup, coral embryos live on as clones
Even modest waves can break apart embryonic corals, but the bits that survive can grow into separate clones.
By Susan Milius -
Life
Pollutants long gone, but disease carries on
Even without new exposures, various chemicals can impact DNA and cause illness across at least three subsequent generations, rat study finds.
By Janet Raloff -
Anthropology
Frozen mummy’s genetic blueprints unveiled
DNA study reveals the 5,300-year-old Iceman had brown eyes, Lyme disease and links to modern-day Corsicans and Sardinians.
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Life
Sardine fishery may be in peril
Cool ocean cycle, population slide evoke collapse of Pacific resource in the late 1940s.
By Susan Milius -
Life
Brain cells know which way you’ll bet
Activity of nerve cells in a key brain structure reveals how people will bet in a card game.