1.
Smart News
The region needs to be prepared for the possibility of more intense quakes than previously thought, a new study of tree rings finds
2.
Smart News
Items found in a Spanish cave are older than previously thought, a new study suggests, calling into question "simplistic assumptions" about early humans
3.
History
The first of these festivals debuted in the early 1960s, serving as a prime example of the United States' burgeoning counterculture
4.
Smart News
An endangered group of killer whales in the Pacific Northwest has been toying with porpoises for decades—and new research offers some possible explanations
5.
Science
The nearly mile-long structure allowed inhabitants to paddle to rich fishing grounds and access trade routes