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.

If you want to include this story in your blog, copy and paste this formatted text:

<p><a href="http://www.physorg.com/news150718583.html">Global increase of warmer years is no accident</a></p> <p>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.</p>