News
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- Paleontology
Ancient armored fish revises early history of jaws
The fossil of a 423-million-year-old armored fish from China suggests that the jaws of all modern land vertebrates and bony fish originated in a bizarre group of animals called placoderms.
- Planetary Science
Experts don’t agree on age of Saturn’s rings
Saturn’s rings could be almost as old as the solar system, and the Cassini craft is poised to help find out.
- Neuroscience
Mice smell, share each other’s pain
Pain can jump from one mouse to another, presumably through chemicals detected by the nose.
