Associated Press: The wind, a favourite power source of the green energy movement, seems to be dying down across the United States. And the cause, ironically, may be global warming — the very problem wind power seeks to address. The idea that winds may be slowing is still a speculative one, and scientists disagree whether that is happening. But a first-of-its-kind study suggests that average and peak wind speeds have been noticeably slowing since 1973, especially in the U.S. Midwest and the …