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Could You Charge an iPhone with the Electricity in Your Brain?

Ever since Morpheus explained how the machines use humans as batteries in The Matrix, we’ve been fascinated by the idea. But can the human body actually generate enough current to do anything useful? We decided to find out, by asking experts how long it would take a human brain to charge an iPhone. » 8/12/15 9:22am 8/12/15 9:22am

What Do You Want to Know About Sexual Anatomy?

When I was in graduate school, I wondered what changes made erectile tissue in the penis shift from its soft and flexible state to its stiff and inextensible state. Then, with the help of some armadillos, I did the research and figured it out. Tell me what you wonder about, and I’ll see whether I can figure it out for… » 5/28/15 12:30pm 5/28/15 12:30pm

Why Do Knuckles Go Pop? Researchers May Finally Have The Answer.

There's some disagreement among physiologists about knuckle-cracking and how it produces its characteristic popping sound. Now, Canadian scientists have used MRI scans to watch what happens inside a cracking finger joint in real time – and their observations may have settled this longstanding debate for good. » 4/15/15 12:30pm 4/15/15 12:30pm