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When humans talk to dogs, the canine brains seem to separate the meaning of the words from the intonation used and to analyze each aspect independently.

The manuscript dates to 1942, when the mathematician and computer science pioneer worked to break the German Enigma code. It is filled with complex mathematical and computer science notations.

On a day where we as a nation will make a very important collective decision, Carl Sagan's "Pale Blue Dot" serves to help remind us of our place in the universe, says astrophysicist Adam Frank.

Over 20 people have been sickened in two new outbreaks of foodborne illness linked to alfalfa sprouts. For something many deem a "health food," sprouts continue to be a vexing food-safety challenge.

In the late 19th century, French inventor Edouard-Leon Scott de Martinville patented the earliest known sound recording device. But his accomplishments were only recognized recently.

Independent reviews said there's no question that mammography benefits women in their 50s and 60s. The reviews also agree that mammograms aren't universally valuable for women in their 40s.

UC San Diego officials say they had to sue to prevent a prominent Alzheimer's scientist from hijacking a major national research project.

Older kids should limit the amount of juice they drink too. Whole fruit is better than juice because it contains fiber, which slows the absorption of sugar and fills you up the way juice doesn't.

The South American polka dot tree frog initially appears unremarkable. But when researchers in Argentina shined an ultraviolet light on the frog, it glowed.

What does it mean to be black? What does it mean to be blacker?