U.S. doctors still prescribing way too many antibiotics

Only 10 percent of adult sore throat cases are caused by bacteria, but 60 percent of these patients are given antibiotics.

New kind of microscope uses neutrons

Device could open up new areas of research on materials and biological samples at tiny scales.

Which neurons fire when this image tricks your brain?

Scientists have pinpointed the brain region responsible for “illusory contours”—when you perceive imaginary shapes and surfaces against a fragmented background.

New X-ray vision can reveal internal structure of objects

Scientists have developed a new kind of ‘X-ray vision’ that is able to peer inside an object and map the three-dimensional distribution of its nano-properties in real time.

Video: What if you stopped sleeping?

Why we need enough sleep .. but not too much.

As Comet ISON sweeps past Mars October 1, most observations will happen

NASA and ESA announced earlier they were readying a flotilla of spacecraft to record the comet's passage near Mars. How much will the U.S. government shutdown interfere? Not much, it seems.

Citizen science: Help classify plankton in waters off southern California

Can you tell a Cydippid from a Solmaris? You can, with a little training. Scientists could use your help classifying plankton at the Plankton Portal.

Video: What will a warming world look like?

NASA has produced a new video that shows what changes in temperature and precipitation can be expected if atmospheric CO2 concentrations continue to rise.

U.S. sees another bright fireball on September 27

September 2013 has been busy for sightings of bright fireballs. The one at 11:33 p.m. local time on September 27 was the 14th fireball sighting in the U.S. in September.

6.8-magnitude earthquake rocks Pakistan on September 28

In a region of Pakistan said to be "desperate" following Tuesday's large earthquake, another earthquake struck earlier today.