News
- Animals
Smells Funny: Fish schools break up over body odor
Just an hour's swim in slightly contaminated water can give a fish such bad body odor that its schoolmates shun it.
- Anthropology
Not So Clear-Cut: Soil erosion may not have led to Mayan downfall
Hand-planted maize, beans, and squash sustained the Mayans for millennia, until their culture collapsed about 1,100 years ago. Some researchers have suggested that the Mayans’ very success in turning forests into farmland led to soil erosion that made farming increasingly difficult and eventually caused their downfall. But a new study of ancient lake sediments has […]
- Astronomy
Odd Couples: Big black holes challenge star theory
The discovery of a black hole almost 16 times as massive as the sun, and the possible discovery of an even heavier one, challenge theories of how such black holes form.
