News
- Paleontology
This exquisite Archaeopteryx fossil reveals how flight took off in birds
Analyses unveiled never-before-seen feathers and bones from the first known bird, strengthening the case that Archaeopteryx could fly.
- Health & Medicine
HHS says new vaccines should be tested against placebos. They already are
Placebo testing has been part of the process since the 1940s. It’s unclear what additional measures would achieve — but it may slow development.
- Animals
Wild chimpanzees give first aid to each other
A study in Uganda shows how often chimps use medicinal plants and other forms of health care — and what that says about the roots of human medicine.
