Less than 100,000 years ago, a cool, small star flew within 0.8 light years of our sun, brushing past the icy Oort cloud that lies at the outer edges of our solar system, according to research published this week.
Why does smoking marijuana give people the munchies? Yale University researchers got dozens of lab mice stoned in order to find out.
Researchers studying the skull of King Richard III say they have determined the fatal blow that killed the medieval monarch more than 500 years ago.
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It’s one of the most dramatic transformations in science, and it happens in your microwave.
Death rates of African Americans living with HIV dropped 28% between 2008 and 2012, according to a new report from the Centers for Disease Control and Prevention.
NASA's New Horizons space probe has sent back some new images of the dwarf planet Pluto and its largest moon Charon as seen from more than 126,000 miles away.
As the California drought enters its fourth year, scientists are trying to genetically engineer plants that survive on less water.