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10 of the Most Dangerous Space Walks Ever Done

The blockbuster film Gravity features one heart-stopping emergency in space after another, most of them outside the confines of a spacecraft. Real-life emergencies during extravehicular activity, or EVA, are more rare, but they do happen.

Space Science

Anatomical Drawings of Leonardo da Vinci

<b>Anatomical Drawings of Leonardo da Vinci</b><p>Anatomy of the Neck, c. 1515 (X)<p>Three Studies of the Shoulder and Neck, c. 1509-1510 (X)

Brains Sweep Themselves Clean Of Toxins During Sleep

While the brain sleeps, it clears out harmful toxins, a process that may reduce the risk of Alzheimer's, researchers say.<p>During sleep, the flow of cerebrospinal fluid in the brain increases dramatically, washing away harmful waste proteins that build up between brain cells during waking hours, a …

The Surprising Passions of 11 Brilliant People

You already knew everyone on this list was brilliant and accomplished in his or her chosen field. What you might not have known is that they were …

Glow-In-The-Dark Paths Could Be The Future Of Street Lighting

Particles absorb light during the day, then emit a blue glow at night.<p>Evening visitors to Christ's Pieces park in Cambridge, England are basking in the glow of a whole new type of street light. Starpath, a new type of resurfacing material being tested within the park, absorbs ultraviolet light …

A House Powered By Its Inhabitants, Inspired By Jane Fonda

Spanish architects design a futuristic home that’s dedicated to political activism and physical fitness.<p>The ubiquity of celebrity endorsements is such that it becomes perfectly natural to see Psy cracking pistachios Gangnam Style or Eva Longoria hawking a new line of experimentally flavored Lays …

Jane Fonda