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Record numbers are voting in the Pennsylvania primary today.»

Scientists have only a rough understanding of how human diversity arises.»

Air France-KLM said its offer to buy the struggling Italian airline Alitalia was “no longer valid,” because Alitalia had failed to clarify the “legal situation” after talks broke off.»

The concept of a normal blood pressure has fallen strikingly as doctors learn what it takes to preserve good health.»

Melanoma is much deadlier when it appears on the scalp or neck than somewhere else on the body, according to a study published Monday.»

Gymnastics, a new study finds, can take a heavy toll on its young practitioners’ bodies.»

People who are on a path to develop Alzheimer’s disease may hasten its arrival if they drink or smoke too much, researchers say.»

Women who spray testosterone on their stomach to raise their sex drive may not see much benefit — unless they also want to grow hair on their belly.»

After the kidney transplant, he felt great. A little too great, as it turned out.»

After the kidney transplant, he felt great. A little too great, as it turned out.<br/><br/> <a href="http://www.pheedo.com/click.phdo?x=07ef2180cee44d9abb689f9f7fe272d1&u=http://www.nytimes.com/2008/04/22/health/views/22case.html"><img src="http://www.pheedo.com/img.phdo?»