To have the highest chance of surviving in the event of a nuclear explosion, people should gather in the corners of concrete structures.

Regimes across North Africa and the Middle East were caught flat-footed as the fervour of the popular uprisings spread at the speed of the ...

Even when a mask is worn, some droplets can travel a considerable distance.

The study says a mild cough in low wind speeds can propel saliva droplets by as much as 18 feet.

Air pollution is causing 8.8 million premature deaths annually.

Commodities fell by as outrage in Cyprus rekindled concern that Europe’s debt crisis may deepen, hurting demand prospects.