The trippy video you see above is the highest-resolution model yet of how carbon dioxide moves around the Earth's atmosphere.
One-fifth of the nation's high school students say they have smoked in the past 30 days, and nearly half of them admit to having experimented with smoking at least once in their lives, according to a new study from the Centers for Disease Control and Prevention.
The Philae probe is alive and well a day after the first successful spacecraft landing on a comet, but scientists are still trying to figure out exactly where it is on its new home.
A mobile laboratory the size of a washing machine made history Wednesday when it completed a slow-motion descent to the surface of a comet 311 million miles from Earth.
The countdown has begun. In less than 24 hours, the European Space Agency's Rosetta mission will attempt to put a laboratory on a comet.
Claudia Alexander has spent the last 15 years of her life waiting for this moment: landing a spacecraft the size of a washing machine on the surface of a speeding comet.
Are there really 8 million rats living among the 8 million humans of New York City?
This month marks the 40th anniversary of the discovery of Lucy, the partial skeleton of an ape-like creature that walked upright 3.5 million years ago. The 1974 find would forever change humanity's understanding of where our species came from and how Homo sapiens evolved.