Recent Heat Waves Caused by Global Warming, NASA’s Hansen Says

Recent Heat Waves Caused by Global Warming, NASA’s Hansen Says

Victor J. Blue/Bloomberg

The paper by James Hansen, the top climate-change scientist at the U.S. National Aeronautics and Space Administration and two co-authors, to be published in the peer-reviewed Proceedings of the National Academy of Sciences, was written before the recent record heat waves and drought across the U.S. Once that data is analyzed, it probably will show links to global warming as well, Hansen wrote in the Washington Post.