US congresswoman Gabrielle Giffords, shot in the head in January, is declared fit enough to attend her husband's space shuttle launch on Friday.

Matthew Syed on why top sportsmen can lose their nerve

Japan deploys nearly 25,000 troops to search for the bodies of those missing since last month's devastating earthquake and tsunami.

The extent of carbon dioxide (CO2) emissions "hidden" in imported goods is growing, according to two studies.

Thousands of people in France and Germany call for an end to nuclear power on the eve of the 25th anniversary of the Chernobyl disaster.

Ash that erupted from a volcano in Iceland last year was sharp and abrasive, suggesting the move to shut European airspace was justified, a study says.