United Press International: U.S. Energy Secretary Steven Chu said Saturday the prospect of more severe hurricanes and rising sea levels in the Caribbean is “very, very scary.” Chu, who met with government officials from other Western hemisphere nations at the Summit of the Americas in Trinidad and Tobago, said it is “a demonstrable fact” that the climate is changing and “very, very convincing evidence — very high probability it was caused predominantly by greenhouse gas emissions.” Referring to a report …