News

Chemistry

Headache tree is a pain in the brain

Following a gardener’s lead, researchers discover an ingredient in bay laurel that causes uncomfortable swelling of cranial blood vessels.

Paleontology

Tooth stranger than fiction

A mammal fossil unearthed in South America resembles ‘Ice Age’ saber-toothed squirrel.

Life

The origin of orbs

Spectacular web designs trace back to a single spider origin.

Space

Mars’ history is a fluid situation

Recent data from two spacecraft suggest the planet was mostly dry and cold, with a wet, warm subsurface.

Earth

Pollution may be strengthening Asian cyclones

Sooty brown clouds may underlie the recent emergence of mega-storms striking from India to the Middle East.