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ArchaeologyCorn domestication took some unexpected twists and turns
A DNA study challenges the idea people fully tamed maize in Mexico before the plant spread.
By Bruce Bower -
NeuroscienceHere’s a rare way that an Alzheimer’s protein can spread
Amyloid-beta found in vials of growth hormone can move from brain to brain, a mouse study shows.
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Animals50 years ago, armadillos hinted that DNA wasn’t destiny
Nine-banded armadillos have identical quadruplets. But the youngsters aren’t identical enough, and scientists 50 years ago could not figure out why.
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AstronomyThe Parker Solar Probe takes its first up-close look at the sun
NASA’s Parker Solar Probe survived its first encounter with the sun and is sending data back to Earth.