News

Astronomy

Alien stars pass close to home

Stars from an alien galaxy are raining down on our own Milky Way and passing just a few hundred light-years from Earth.

Health & Medicine

Nanoparticles hunt down and kill tumors

Gold nanoparticles, injected into mouse tumors and exposed to light, have been found to destroy cancer cells, a treatment approach that may one day offer an alternative to surgery.

Physics

Hints emerge of a four-quark particle

Previously observed only in twos, threes, and perhaps in fives, quarks and antiquarks in a newfound particle may have glommed together to form a never-before-seen foursome.

Ecosystems

New Farmers: Salt marsh snails plow leaves, fertilize fungus

A salt marsh snail works the leaves of a plant in what researchers say looks like a simple form of farming.