Exposure to heavy traffic fumes raises heart attack risk for the following six hours, researchers discover.

Mexican prosecutors drop terrorism charges against two people accused of using Twitter and Facebook to spread false rumours about gang violence.

Google's executive chairman denies that the company fixes its search results to promote its own websites and services.

Two women who continue to wear the full-face veil in defiance of a law banning it in France are appearing in court for sentencing.

Wikileaks founder Julian Assange criticises a UK publisher for releasing drafts of his autobiography without his approval.

Britain faces a "long, hard road" to economic recovery, Deputy Prime Minister Nick Clegg warns in his big speech to the Lib Dem conference.

Barack Obama tells the UN General Assembly a Palestinian state can only be achieved through talks with Israel, as thousands rally across the West Bank.

An ever-increasing number of land deals are displacing farmers and leaving communities without livelihoods, campaigning charity Oxfam warns.