News
- Humans
In teeth, more cracks are better than one
Cracks in tooth enamel, called tufts, distribute force and shield a tooth from fracture, researchers report.
- Life
Early land arthropods sported shells
Ancient ocean-dwelling arthropods may have worn shells to enable their transition to land.
- Animals
Oh, he’s such a lab bird
Bold flycatchers may be more likely than shy birds to get trapped for lab studies.
- Materials Science
Double-laser approach makes one thin line
Erasing and stenciling could refine tiny printing for sculpting nano-sized devices.
- Anthropology
African pygmies may be older than thought
A new DNA analysis indicates that pygmy hunter-gatherers and farming groups in Africa diverged from a common ancestral population around 60,000 years ago.
