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It's already happened. We humans have already met an intelligent alien. Not only that, we almost certainly had sex with them. And we did here, right here on Earth, not so many generations ago.

Girdles and hormone therapy for grapes? California farmers go to great lengths to plump and firm up grapes as much as possible. But don't worry: None of these techniques hurts the grapes or those who love them.

Can red wine slow down the aging process? According to a new study published in Science, a compound found in the skin of grapes activates an anti-aging gene in mice that promotes longevity. Harvard Medical School's David Sinclair discusses the research findings.

Last week a Florida man was swallowed by the Earth as he slept, the victim of a sinkhole. In 1981, another Florida sinkhole ate a swimming pool and a Porsche repair shop. Randall Orndorff, a geologist for the U.S. Geological Survey, discusses this mysterious phenomenon, and whether technology exists to predict when--and where--the surface might crumble.

Neurosurgeons are testing whether electrodes implanted deep inside a patient's brain could help treat chronic anorexia. Doctors are searching for something to help in these hard cases, and a small experiment, with just a half-dozen women, is drawing attention.

There are three reasons to see this prequel to the classic 1939 film The Wizard of Oz: the trio of witches played by Mila Kunis, Rachel Weisz and Michelle Williams. But James Franco, who stars as the wizard-in-the-making, disappoints — and the film as a whole is a bit snoozy.

Brennan was sworn in by Vice President Joe Biden using an original draft of the U.S. Constitution.

The challenge, launching during the SXSW festival Saturday, asks anyone with an Internet connection to try to create a rocket engine. The 3-D designs can be edited by users around the globe, a model the organizers hope will decrease the cost of space innovation and unleash "untapped potential around the world."

While the laws in some states might allow school employees to bring guns into classrooms, South Dakota is believed to be the first state to enact such a specific measure. It gives districts the right to set up "school sentinel" programs that train personnel.

Sure, the economy added 236,000 jobs last month and unemployment dropped to 7.7 percent. But questions about low wages, consumer debt and government austerity cloud the sunny picture. We look at five points economists are debating.