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 ...

Global increase of warmer years is no accident

Between 1880 and 2006 the average global annual temperature was about 15°C. However, in the years after 1990 the frequency of years when this average value was exceeded increased.

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