News
- Earth
Warning: Slow down for whales
To protect a major population of right whales, the U.S. government is proposing periodic go-slow rules for big ships passing through the animals' migration routes.
- Tech
Power Play: Shift from loss to gain may boost silicon devices
By tapping solar cell-like behavior in a silicon optical amplifier, engineers have shown that light-manipulating components made from silicon can become power recyclers rather than power wasters, an advance that boosts prospects for silicon optical devices.
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Feminine Side of ADHD: Attention disorder has lasting impact on girls
Many girls diagnosed with attention-deficit hyperactivity disorder as grade-schoolers struggle with a variety of problems related to that condition as teenagers, even though their hyperactive symptoms often ease.
