US and Canada promise to lead world to low-carbon economy

Countries previously seen as climate change villains present shared vision on cutting emissions as Justin Trudeau meets Barack Obama at White House

The US and Canada declared they would help lead the transition to a low-carbon global economy on Thursday, in a dramatic role reversal for two countries once derided as climate change villains.

The shared vision unveiled by Barack Obama and Justin Trudeau ahead of a meeting at the White House commits the two countries to a range of actions to shore up the historic climate agreement reached in Paris last December.