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Will E.T. Hear Us? Reply To 'WOW! Signal' Gets Beamed Into Space Today

Thirty-five years ago today an astronomer wrote "Wow!" when he saw evidence of what might have been a message from deep space. One like it hasn't been detected since. Today, National Geographic's Chasing UFOs sends a reply.

Daily Dose Of Dark Chocolate May Help Lower Blood Pressure

A little chocolate may lower your blood pressure, scientists say, but don't throw out the medicines just yet. The new study is the latest in a string of signs that some of the properties in chocolate might be good for you.

Fun And Free Science In Providence, R.I.

The Providence Alliance for Clinical Educators combines captivating storytelling with exquisite illustrations to teach scientific principles in a fun and memorable way.

Changing Climate May Have Led To Earliest Mummies

South America's Chinchorro people lived in an extremely dry desert region where the dead turned into mummies naturally. But at some point, they stopped leaving the process to nature. Now, scientists say the Chinchorros began mummifying their dead as their climate grew wetter.

Think It's Hot? The Swiss Just Hit 5.5 Trillion Degrees

In light of this summer's record high temperatures, we find perspective on really hot temperatures. In an experiment, scientists at Europe's CERN laboratory claim to have achieved the highest temperature ever produced by humans — about 5.5 trillion degrees. Audie Cornish and Melissa Block have more.

Climate 'Weirdness' Throws Ecosystems 'Out Of Kilter'

"We've had time to act — and essentially we haven't acted," says science journalist Michael Lemonick. He describes the threats posed by climate change in his new book, Global Weirdness: Severe Storms, Deadly Heat Waves, Relentless Drought, Rising Seas, and the Weather of the Future.

How A Virus In Snakes Could Offer Clues To Ebola In Humans

A newly discovered disease that makes boa constrictors sick could help researchers figure out how some dangerous viruses in animals end up infecting people.

Feds Conclude Probe Of Polar Bear Scientists

Critics have charged that the two-year federal investigation into two researchers who wrote a famous report on drowned polar bears was a witch hunt. The probe is over, but the scientists have not been allowed to see its conclusions, their lawyer says.