(BBC) Former US President George W Bush attracts thousands of friends during his first day on the social networking website Facebook.
The use of targeted killings with drone aircraft poses a growing challenge to the international rule of law, a UN official says.
Oil from the Gulf of Mexico is seen off the coast of Florida, as the latest effort to cap the well continues.
(BBC) Firefighters in Canada battle forest fires that have sparked smog alerts across Quebec and parts of the north-eastern US.
Oil firm BP begins preparations for a new attempt to cap the huge flow of oil from its leaking well in the Gulf of Mexico.
President tones down Bush-era security strategy
BP gives details of its internal inquiry into the Gulf oil spill to the US government, as it works to stem the oil flow.
(BBC) Texas adopts a school curriculum which critics say will politicise teaching by demonising the UN and celebrating the free market.
Two political veterans are to head an independent US body to investigate the Gulf of Mexico oil spill and BP's role.
The first oil from the Gulf of Mexico spill has reached a powerful current that could drag it to Florida, scientists say.