News
- Astronomy
Lights out
Astronomers who have conducted a detailed analysis of the colors of some 37,000 nearby galaxies conclude that the universe is gradually growing darker.
- Chemistry
Amino acid lends a heavy hand
Scientists have identified a mechanism to explain how amino acids evolved to become exclusively left-handed in all living organisms.
- Tech
Smart dust can swarm target
Microscopic mirrors can swarm a target and produce an optical signal that identifies the target to the observer.
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Flag raised for kids’ mental health
A study of North Carolina children and teenagers finds that at least 1 in 3 developed one or more psychiatric disorders by age 16.
