A simple two-carbon compound may have been a crucial player in the evolution of metabolism before the advent of cells, according to a new study. The finding potentially sheds light on the earliest ...

The head of the World Anti-Doping Agency wants tennis authorities to shed light on Andre Agassi's admission that he used a banned drug and escaped a suspension by blaming his positive test on a spiked ...

LONDON(AP) The president of the World Anti-Doping Agency wants tennis authorities to ``shed light'' on Andre Agassi's admission that he used a banned drug and escaped a suspension by blaming his ...