rochelle dsouza

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Study: Sunscreen Prevents Aging

Slathering up with sunscreen can help you look younger. In a study published Monday in the <i>Annals of Internal Medicine</i>, researchers in Australia found that people who regularly apply sunscreen are 24 percent less likely to show signs of increased aging. There's just one catch: You have to apply …

How to Do Everything. (Well, Almost.)

Learning something new every day just ain't enough, so we rounded up a herd of pros, experts, and autodidacts; interrogated them (gently); and laid down their secrets here. Dig in to our encyclopedic array of do-it-yourself intelligence and discover the right way to climb high, fool fish, brew …

We're Making Less Effective Drugs Now Than 40 Years Ago

A new study examines the effectiveness of new drugs compared with placebo in drug trials from 1966 to 2010. The new drugs aren't looking so hot.<p>Apparently, the good ol' days really did shine brighter, at least for drug development. In decades past, clinical trials found that drugs were hugely …

Important Scientific Mystery Solved: How Birds Lose Their Penises

The penises of many male birds stop growing and shrink away. Scientists reveal the genetic mechanism at work.<p>A team of researchers at the University of Florida has solved the mystery of what some call "one of the most puzzling events in evolution": the reduction and loss of the penis in most male …

NASA Flight Controller Talks Space with Students