A small village in India has about a hundred pairs of twins, mostly same sex and 90 percent born in the last 20 years. No one can explain the phenomenon.
Dental pulp from a wisdom tooth could be a new source of therapeutic stem cells, sidestepping the ethical concerns of embryonic cells, Japanese researchers claim.
The discovery of a massive virus that suffers from another virus has reignited speculation over whether the agents of infection should be considered life-forms.
Speaking in Senegal and Liberia, the former U.S. president announced initiatives he said could immediately reduce AIDS-related infant mortality and, separately, significantly extend affordable malaria treatment.
Running in sauna-like chambers and the sticky Texas humidity is helping athletes adjust their bodies to perform at their peak during the 2008 summer games, but smog remains a worry.
The "singing" sands of Dunhuang are no longer music to the ears of city residents, who face disappearing rivers, buried farms, dust-choked homes, and other ills.