News
- Earth
Earthly riches heaven sent
A period of heavy meteorite bombardment after Earth's formation may have peppered Earth's outer layers with useful metals.
- Health & Medicine
Brain stents pose risks
Devices to prop open narrowed vessels appear to raise the risk of death or stroke compared with medicines alone, a study finds.
- Life
In the dark, cave fish follows its own rhythm
Scientists unwind an odd biological clock to better understand how organisms set daily cycles.
- Chemistry
Explosive goes boom, but not too soon
Leavening a volatile new material with good old TNT yields a substance that’s safer to handle and easily reverted into a highly potent form.
