President Barack Obama plans a fee of $10 (£6.85) on every barrel of oil produced by US firms to fund green transportation projects.

Maurice White, founder of US soul band Earth, Wind & Fire, has died aged 74, his brother says.

A Chinese writer tells the BBC he published a provocative book about President Xi Jinping, linked to five missing Hong Kong booksellers, as a challenge to China.

President Barack Obama says he will ask the US Congress for $450m (£309m) in aid to help Colombia implement a peace deal with the Farc rebel group.

Hillary Clinton and Bernie Sanders go head-to-head for the first time in a TV debate, as they vie to be the Democratic presidential pick.

Plans have been put forward to cap a huge gas leak near Los Angeles by the end of next week, a Californian official says.

Thai authorities launch a pre-Valentine's Day campaign urging teenagers not to be ashamed to buy and carry condoms.

A UN panel says Wikileaks' Julian Assange should be allowed to walk free and compensated for his "deprivation of liberty" - a finding the UK will contest.