Keystone pipeline spills 5,000 barrels of oil in US
Critics say incident in South Dakota should raise serious questions about plans to expand oil pipelines in the US.
Argentina: No contact with submarine with 40 crew
Navy launches air and sea operation after loss of communication with the ARA San Juan for 48 hours.
Australia's youth prisons accused of abuse
An inquiry into abuse at youth prisons in Australia's Northern Territory has called for the closure of one of the detention centres.
Week in pictures: From Iran earthquake to Greece floods
A photo roundup of some of last week's events, including protests in Barcelona and a suicide bomb attack in Kabul.
Tag the Bird Editions: USA - UK - Canada - India - Japan - Spain - Mexico - Argentina - Latin America - Brazil - France