A recently released federal report looks at the regional and state-level effects of climate change throughout the U.S. The National Climate Assessment notes that the intensity and frequency of Atlantic hurricanes have grown since the early 1980s and that winter storms have moved to the north and become more frequent. In addition, heavy rainfall, heat waves and droughts are expected to intensify, according to the report. "Now is the time we have important choices to make," said University of South Carolina geography professor Kirstin Dow, who contributed to the report.

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