Jeremy Laurance

Scientists Warn of Sperm Count Crisis

The reproductive health of the average male is in sharp decline, the world's largest study of the quality and concentration of sperm has found.

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Are Mind-Enhancing Drugs a Dangerous Fad or a Great Way to Get Ahead?

In the middle of the exam season, the offer of a drug that could improve results might excite students but would be likely to terrify their parents. Now, a distinguished professor of bioethics says it is time to embrace the possibilities of "brain boosters" -- chemical cognitive enhancement. The provocative suggestion comes from John Harris, director of the Institute for Science, Ethics and Innovation at the University of Manchester, and editor-in-chief of the Journal of Medical Ethics.

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