More than half a million people took part in rallies around the world ahead of today’s opening of the 21st United Nations climate change summit here in Paris, France. World leaders have arrived for two weeks of negotiations aimed at reaching an accord on global warming. In London, the musician and artist Peter Gabriel said citizens around the world are calling out for a binding and just agreement.

Peter Gabriel: “I think the politicians are certainly becoming aware that a lot of the people of the planet are really worried about this issue and really feel it’s a serious threat. So, hopefully, they will respond. And I think that’s part of the aim of this march and these marches going on all over the world.”