News
- Health & Medicine
Excess salt may stiffen heart vessels
As sodium in diet increases, a coronary risk factor independent of blood pressure escalates, according to a study in middle-aged U.S. men.
- Life
Sawfish don’t saw
Spiked snouts whack prey to the bottom, helping the predator better get its mouth around dinner.
- Life
Fossil pushes back land-animal debut
Creatures first squished mud through their five toes millions of years earlier than previously believed.
- Physics
Plants’ reproductive weaponry unfurled
Botanical tricks include adhesion and bubbles to spread their spores into the environment.
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