Posted: Tuesday, May 21, 2013 12:00 am
Updated: 1:35 am, Tue May 20, 2014.
Global warming is accelerating, and chilly weather in the U.S. in April wasn't enough to reverse the planetwide trend.
Nebraska had its fourth-coldest April on record, Iowa its 13th-coldest, and the lower 48 states experienced their 23rd-coldest April. These records date to 1894.
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Tuesday, May 21, 2013 12:00 am.
Updated: 1:35 am.