At least 83 Guatemalans may have died after being deliberately infected with STDs by US medical researchers in the 1940s, a US commission hears.

The number of people killed by Tropical Storm Irene nears 40, as authorities warn flooding could continue for three more days in some US states.

The US government wasted $30bn (£18bn) in contracts in Afghanistan and Iraq over the last decade, a bi-partisan spending commission finds.

The youth leader of South Africa's ruling African National Congress faces disciplinary action, charged with "sowing divisions" in the party.

A US federal judge blocks Alabama's strict new anti-illegal immigration law, saying she needs more time to weigh its constitutionality.

US President Barack Obama's uncle was held on suspicion of drink-driving and told police he would call the White House to arrange bail, authorities say.

Twenty-two coal miners trapped underground for nearly a week in a flooded illegal pit in north-eastern China have been rescued, officials say.

Wildlife agents hunt a grizzly bear that killed a Michigan man in Yellowstone National Park, its second fatal bear attack this summer.