There are new efforts to mobilise action against global warming. Campaigners led by the former US vice president Al Gore are organising a string of pop concerts to raise awareness about the issue. This as part of a new campaign called Save Our Selves, or SOS. The concerts, in July, will take place in numerous cities, and will include a live performance in Antarctica. Called Live Earth, the events will feature more than a hundred of the world’s top performers.