David Cameron, Nick Clegg, and Ed Miliband are in the news. Unusually, they have signed a joint declaration on climate change. The three party leaders have done this during the general election campaign in Britain. As the prime minister, deputy prime minister, and leader of the opposition party declare, “climate change is one of the most serious threats facing the world today.” Besides, “it is not just a threat to the environment, but also to our national and global security, to poverty eradication, and economic prosperity.” Most important, “it is in our national interest to act and ensure that others will act with us.” Fabulous, this. The declaration was welcomed by Al Gore as “inspiring leadership.” The former vice president of the United States added that Britain is a good place for climate-friendly investment. The multiparty agreement was in sharp contrast to America, Australia, and Canada, where the conservative politicians typically argue against the need to act on climate change. But the declaration shows that they will all agree sooner or later that climate change is one of the most serious threats facing the world today, for none of them will miss the message concerning climate-friendly investment. Capitalism is at stake, after all.