A proposed device could expand the reach of X-ray lasers, opening new experimental avenues in biology, chemistry, materials science and physics.

They discovered the messy environment of a chemical reaction can actually change the shape of a catalytic nanoparticle in a way that makes it more active.

For the first time, scientists have revealed the steps needed to turn on a receptor that helps regulate neuron firing. The findings might help researchers understand and someday treat addiction, psychosis and other neuropsychological diseases.

Researchers expect the new method to answer fundamental questions in biology and materials science. First up: Images showing molecules that help guide cell division in bacteria.