President Obama has travelled to Colorado to push Congress to revive the stalled national gun debate, as Connecticut is set to enact its own new laws.

A Palestinian teenager has been fatally shot by Israeli forces in the West Bank city of Tulkarm, after clashes between soldiers and youths.

The UK government should withhold extra aid to Pakistan unless the country does more to gather taxes from its wealthy citizens, a group of MPs say.

The government in Argentina announces three days of national mourning after flash floods killed more than 50 people in La Plata and Buenos Aires.

Nineteenth Century tools made from sharks' teeth suggest that two species of shark used to populate the Central Pacific Ocean but are no longer present.

The body's own "training manual" for successfully attacking HIV has been cracked by US scientists and it is hoped it can be used to design vaccines.

Four people are in custody in the US and Canada after a suspected drug smuggler fired on US border agents and fled, sparking a day-long manhunt.

Seven young ballet dancers from Cuba have defected while on tour in Mexico