News
- Physics
New laser is from the birds
Inspired by an optical trick that colors feathers without pigment, physicists come up with a cheap, practical design.
- Earth
Ozone hole on the mend
Researchers claim to see atmospheric healing more than a decade earlier than a detectable uptick was expected.
- Life
Body attacks lab-made stem cells
In mice, the immune system targets and destroys reprogrammed adult skin cells, raising questions about their medical potential.
- Health & Medicine
Gravely damaged brains have ‘bottleneck’
A failure in electrical signaling may distinguish patients in vegetative states.
