BBC: Protesters took to the streets of Manhattan on Sunday to call for global action to address climate change. The event's organisers estimated that turnout exceeded 300,000, making it one of the largest environmental-related protests in US history.
The event's success has many on the left heralding a new dawn for climate-change activism. After stalled efforts to pass limits on greenhouse gas in 2009, the issue had been pushed to the political margins. President Barack Obama made moves to strengthen...