Greenpeace: As US President Barack Obama addressed a crowd of thousands in Prague, Greenpeace activists unveiled a banner urging him to “lead the change on climate”, a challenge Obama accepted in his speech [1]. At the same time Six Greenpeace activists unfurled a huge banner reading “Bail Out the Climate” from a bridge opposite the building in Prague where the EU-US Summit is taking place today. “Obama has said today that the US is ready to lead on climate change. Now we need to see the European …