Science Friday Audio Podcast

The Antarctic ozone hole reaches its largest size by late September -- but then it disappears again.

Gravity doesn't behave as expected in a new art exhibition in New York City.

Inventor Nick Holonyak describes the creation of the visible light-emitting diode, or LED.

This year’s Nobel laureates changed our understanding of our bodies and the world around us.

Did the rover shed a piece of plastic while collecting its first scoop of Martian soil?

Crown-of-thorns starfish are partly to blame for the Great Barrier Reef's alarming loss of coral cover.

Researchers are studying how gene regulation influences memory.

The black hole resides at the center of a galaxy located 50 million light-years from Earth.

For rhinoceros beetles, size matters.

Stem cells can be turned into heart, liver, and brain cells -- but what about a whole new organism? A study in Science explains the transformation from stem cell to egg to mouse pup.

Did you know some infinities are bigger than others? Or that one is equal to .99999999999 repeating? Just a few of the math mysteries in The Joy of X, a new book by Steven Strogatz.

Mapping streets is easy. The trick is pinning down businesses and giving accurate turn-by-turn directions.

"All DNA evidence is not created equal," says Greg Hampikian, Director of the Idaho Innocence Project. He’ll tell us why DNA 'evidence' sometimes leads to the wrong conclusion.

Cheatgrass, an invasive weed, chokes out native sagebrush -- and sets the stage for massive blazes.

Move over mammoths -- many lesser-known beasts roamed North America during the Ice Age too.