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.
- Archaeology
Wild monkeys throw curve at stone-tool making’s origins
Monkeys that make sharp-edged stones raise questions about evolution of stone tool production.
- Genetics
‘Three-parent babies’ explained
Several in vitro techniques can produce babies with three biological parents.
- Life
In a first, mouse eggs grown from skin cells
Stem cells grown in ovary-mimicking conditions in a lab dish can make healthy mouse offspring, but technique still needs work.
- Neuroscience
Out-of-sync body clock causes more woes than sleepiness
The ailment, called circadian-time sickness, can be described with Bayesian math, scientists propose.
- Animals
Be careful what you say around jumping spiders
Sensitive leg hairs may let jumping spiders hear sounds through the air at much greater distances than researchers imagined.
- Life
Placenta protectors no match for toxic Strep B pigment
Strep B uses a toxic pigment made of fat to kill immune system cells, spurring preterm labor and dangerous infections, a monkey study shows.
- Psychology
Erasing stigma needed in mental health care
Social forces drive those in need away from mental health care.
- Life
One-celled life possessed tools for going multicellular
Unicellular ancestors of animals had molecular tools used by multicellular life.
