News
- Paleontology
Ancient DNA suggests polar bears evolved recently
A study of a rare Norwegian fossil narrows down when polar bears evolved and finds they are closely related to modern-day brown bears in Alaska.
- Archaeology
Stone Age engraving traditions appear on ostrich eggshells
Fragments indicate symbolic communication on 60,000-year-old water containers.
- Humans
Titanic study: It takes time to do the right thing
Comparing the Titanic and Lusitania disasters suggests that people in a crisis are more likely to maintain social norms if they have longer to react.
- Health & Medicine
Hormone may be heart-healthy insulin substitute
A study in mice finds leptin lowers blood sugar without raising cholesterol.
