Earth's seasons now arrive 2 days earlier, researchers report

(PhysOrg.com) -- Not only has the average global temperature increased in the past 50 years, but the hottest day of the year has shifted nearly two days earlier, according to a new study by scientists from the University of California, Berkeley, and Harvard University.

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<p><a href="http://www.physorg.com/news151766660.html">Earth's seasons now arrive 2 days earlier, researchers report</a></p> <p>(PhysOrg.com) -- Not only has the average global temperature increased in the past 50 years, but the hottest day of the year has shifted nearly two days earlier, according to a new study by scientists from the University of California, Berkeley, and Harvard University.</p>