CO2 higher today than last 2.1 million years

Researchers have reconstructed atmospheric carbon dioxide levels over the past 2.1 million years in the sharpest detail yet, shedding new light on its role in the earth's cycles of cooling and warming.

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

<p><a href="http://www.physorg.com/news164553313.html">CO2 higher today than last 2.1 million years</a></p> <p>Researchers have reconstructed atmospheric carbon dioxide levels over the past 2.1 million years in the sharpest detail yet, shedding new light on its role in the earth's cycles of cooling and warming.</p>