News
- Earth
Arctic sea emits methane
Source of climate-warming gas remains uncertain, but might be microbes.
- Psychology
Two heads sometimes better than one
Group decisions rise or fall based on what the most confident member knows or doesn’t know.
- Astronomy
Dark matter search turns up empty
New calculations suggest dearth of invisible substance in solar neighborhood.
- Health & Medicine
Neighborhood linked to obesity
Children living in areas that lack walking-distance parks and supermarkets are more prone to put on weight, new studies find.
- Life
Polar bears older than previously thought
New analysis reveals that the Arctic species dates back to about 600,000 years ago.
