How Painful Is Pepper Spray?

Thomas K. Fowler / AP

Video footage of police using pepper spray on peacefully protesting students at the University of California, Davis, on Nov. 18 has sparked national outrage. But the use of such brutal force against passive protesters isn’t as uncommon as you’d think.

21%

Percentage drop in AIDS-related deaths worldwide since their peak in 2005. The number of new HIV infections also fell 21% since their peak in 1997, according to a new UNAIDS report [PDF]. In 2010, an estimated 1.8 million people died from AIDS, down from 2.2 million in 2005; in 2010, there were about 2.7 million [...]

Why Are Thinner People More Likely to Die After Surgery?

Chris Ryan / Getty Images

Thin and normal-weight people may have a higher risk of dying soon after surgery than patients who are overweight, a new study finds.

Why Parents Still Want to Read Real Books, Not E-Books, to their Kids

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In my house, bedtime stories are sacred. Rarely does something derail the nightly routine, although feverish kids have been known to be tucked in, sans story. But last week, my strep-throated 4-year-old awoke at 1 a.m. with this complaint: “You forgot to read me my bedtime story.”

‘Terminator’-Style Contact Lens Projects Info Before Your Eyes

Courtesy of the University of Washington School of Engineering

Those info-streaming retinal displays from the Terminator movies may be closer to fact than fantasy, according to researchers at the University of Washington and Aalto University, in Finland, who are developing a computerized contact lens that could be used to display data — like emails and text messages — right in front of your eyes.

“I've had people tell me I’m beautiful, and nobody ever told me I was beautiful before.”

—CHARLA NASH, who received a full-face transplant earlier this year, after surviving a vicious attack by a chimp in 2009 that left her without a face or hands. Nash was permanently blinded in the attack, so she can't see her own face, and relies on others' feedback about her appearance. A little girl recently said [...]

Why the Myth of the Meth-Damaged Brain May Hinder Recovery

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Methamphetamine is widely believed to cause brain damage and cognitive impairment in users. But this claim may be wildly overblown, according to a new review of the research.

Europe Bans Airport X-Ray Scanners. Should the U.S. Follow Suit?

Chip Somodevilla / Getty Images

As millions of American travelers take to the airways this Thanksgiving, they will increasingly face the new generation of full-body scanners at airport security — including the kind that Europe just banned for reasons of “health and safety.”

Spacing Siblings At Least Two Years Apart Makes Kids Smarter

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Kasey Buckles’ kids are two years, two months and two weeks apart. The timing is significant because Buckles, an assistant professor of economics at the University of Notre Dame, has just officially determined that the ideal spacing between an older and younger sibling is at least, you guessed it, two years — at least when it [...]

20%

Percentage of Americans age 12 or older who have hearing loss — defined as being unable to hear speech at 25 decibels or lower — in at least one ear, according to a recent study by researchers at Johns Hopkins School of Medicine. About 13% of Americans have hearing loss in both ears. Aging and [...]