News
- Earth
Ozone hole at smallest size in decades
Warm Antarctic temperatures help preserve UV-protecting layer.
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- Health & Medicine
Same neurons at work in sleep and under anesthesia
Drugs boost activity in nerve cells that usually induce a slumber.
- Astronomy
Violent birth proposed for Saturn’s moon mishmash
A simulation suggests that giant collisions created Titan and the planet’s many smaller satellites.
- Humans
Shoulder fossil may put Lucy’s kind up a tree
Fossils of an ancient child suggest the more than 3-million-year-old hominid mixed climbing with walking.
