United Press International: Cutting back on red meat will curb global warming, a Nobel Prize-winning United Nations climate expert says. Even having one meat-free day a week will help cut greenhouse-gas emissions and other environmental problems — including habitat destruction — associated with rearing cattle and other livestock, Rajendra Pachauri, chairman of the U.N. Intergovernmental Panel on Climate Change, told The Observer of London. “In terms of immediacy of action and the feasibility of bringing …