University of East Anglia Climate Research Unit Officials at a key global-warming research center in the United Kingdom have authenticated a series of e-mails and other documents apparently taken from their computer system by a hacker, but they cannot explain what scientists in internal exchanges meant by references to a “trick” that would “hide the decline” of global temperatures... 

Former Vice President Al Gore shared his optimism about the “shifting momentum” of the climate change debate with about 500 environmental journalists Friday in Madison. “We’re very close to that political tipping point,” Gore said at the Society of Environmental Journalists annual conference at the Madison Concourse Hotel. “Never before in human history has a single...