James Hansen is widely recognised
as the world’s leading climate scientist.
![HansenatCopp17](../wp-content/uploads/2009/12/HansenatCopp171-224x300.jpg)
He calculated the 350 estimate. See the 350.org Tab.
The relentless exploitation of fossil fuels has to stop because his analysis shows that burning only a third of the proven fossil fuels could trigger a “runaway” greenhouse effect “sustained for centuries”.
Other research confirms that only a 1.5°C global temperature rise is sufficient to cause a runaway methane release. If fossil fuel burning continues at or above the current rate this will occur in 10-30 years.
Sources: See the 11/7/2013 Guardian article in the Daily News Posting list.
For James Hansen’s websites -
(This website has all of James Hansen’s research publications and also publications in the popular media).