News
- Health & Medicine
Do Meat and Dairy Harm Aging Bones?
Two studies have contradictory findings about the impacts of animal protein on bones in elderly people.
- Earth
Lake sediment tells of Maya droughts
Sediment cores taken last year from the bottom of a lake on Mexico's Yucatán peninsula indicate that a series of extended droughts coincided with major cultural upheavals among the Mayan inhabitants of the area.
- Earth
Sediments show bipolar melting cycle
Both the North and South Poles have experienced regular and simultaneous periods of significant melting during the past 3 million years, according to sediments from the ocean floor at high latitudes.
