A coalition of environmentalists, faith-based groups and poverty advocates is hoping to persuade President Obama to host a national climate change summit at the White House early in his second term as a way of making good on his pledge to initiate a national discussion on the issue. Advocates of the idea sent a petition to the White House after a Nov. 12 news conference at which Obama spoke of his plan to launch "a conversation across the country" on the risks of climate change and ways to address them. Go to story #1