Chemist Chad Mirkin describes advances in using DNA molecules to shape nanoscale crystal structures.

Could a stash of ancient bones be the work of a giant cephalopod?

Should candidates take an American Science Pledge?

How will energy efficiency standards affect light bulb design?

Psychiatrist Richard A. Friedman discusses several effective treatments for the winter blues.

A discussion of a video that captured the rare Imperial woodpecker on 16 mm color film in 1956. Aired Nov. 11, 2011 [4:23]

How much science do kids learn outside the classroom?

A collection of audio clips where scientists around the world were challenged to answer,"What is a flame". Eleven-year-olds from around the world will judge the entries. [30:21]

Are temporary streaks on Martian hillsides a sign of salty water?

Reporter Ron Cowen discusses his top picks from a meeting of the American Astronomical Society.

Researchers have created a working transistor out of just one phosphorous atom.

A study published this week finds that 'brown fat' - a type found in babies - is actually present in adults as well, and has impressive calorie-burning powers.

New research weighs in on the efficacy of several popular weight loss diets, and finds that it's not so much what you eat, but how much of it.

When it comes to greenhouse gas emissions, what you eat may be more important than where that food comes from, a new study finds. [12 mins. 8]

Can other social networks make users unfriend Facebook?

Increased forest fragmentation and a boost in carbon dioxide may contribute to the vines' success.

Stem cell implants slowed the onset of symptoms -- and scientists say human trials aren't far behind.

Neuroscientist David Eagleman exposes our unconscious minds in his latest book Incognito.

A paper finds wind energy could provide hundreds of terawatts, if enough turbines are installed.

The plan identifies 285,000 acres of public land in six Western states for solar energy projects.

Food waste is a growing problem in the U.S., so what can we do to fix it?

For rhinoceros beetles, size matters.

Turning data into faces makes people take notice.

A red disk painted in a Spanish cave over 40,800 years ago could be the work of Neanderthals.