rochelle dsouza

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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