Scientists use X-rays to peer into a person's body, and a new X-ray imaging technique does the same for individual cells. “You should be able to image most macromolecular assemblies inside the cell”, such as proteins and DNA, says Pierre Thibault, a physicist at the Paul Scherrer Institute in Villigen, Switzerland who leads the team that reports the new technique in the July 18 Science.Also, “it’s certainly a very important tool for nanotechnology,” Thibault says. The best light microscopes can’t distinguish features smaller than 200 nanometers. But images made with the new te...

A new 3-D microscopy technique offers unprecedented views of cells.

In a step toward someday making brain-controlled prosthetic arms for people, scientists have trained monkeys to control a robotic arm with their thoughts. Click on the image to read the story and see the video.

Using software that mimics neural networks, researchers have found new mosquito repellents that last longer than commercially available repellent.