Agence France-Presse: A leading US senator warned on Wednesday that deferring potentially costly actions to combat climate change because of the global economic slump amounted to “a mutual suicide pact.” “Climate change is not governed by a recession, it’s governed by scientific facts about what’s happening to Earth. And you either accept the realities of the science or you don’t,” said Democratic Senator John Kerry. He spoke after some of his colleagues argued that the United States should not …