Female Facebook users are posting the color of their bras in order to raise breast cancer awareness.

How are large groups of animals capable of astonishingly coordinated behavior? Do human crowds behave according to similar logic? This week Princeton evolutionary biologist Iain Couzin, a specialist in self-organized pattern […]

Supporters of the Iranian Government have used the grave of Neda Soltan, the young woman killed during protests in June who became a symbol of opposition, as target practise.

Yemen insisted yesterday that it could handle its own security challenges without direct intervention from foreign powers “pointedly warning” the US to keep its troops out.

New research has found that there is an increased presence and severity of coronary artery plaques in men infected with HIV.

Two defense contractors have been charged with shooting and killing two Afghan citizens in Kabul and wounding a third, prosecutors said on Thursday.

Officials are warning that the World Cup in South Africa could be a public health disaster with half the nation’s prostitutes carrying HIV and half a million football fans expected in the region.