News
- 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.
- Chemistry
Synthetic heredity molecules emulate DNA
Scientists have created six XNAs that, like the genetic building blocks they mimic, can store and pass on hereditary information.
