They claim that shale gas has twice the carbon footprint of coal over the short-term.
The Press & Sun Bulletin (Ithaca, NY) reports,
ITHACA — A group of Cornell University scientists is standing its ground in the face of a challenge to its research on the climate change impact of shale gas drilling.
Led by Cornell ecology and environmental biology professor Robert Howarth, the scientists released a study last year showing that energy produced from natural gas drilling in shale formations can have a greater greenhouse gas footprint than energy produced from coal.
The study attracted national attention because its findings undermined a common argument in favor of natural gas production: that it is a cleaner energy source and can be a “bridge” fuel toward more sustainable energy sources like wind and solar.
Instead, Howarth and his co-authors wrote, the greenhouse gas footprint of shale gas is “perhaps more than twice as great as coal” when you compare the two energy sources over a 20-year time frame and “comparable” to coal over a 100-year time frame…
Regardless of the emissions, with respect to their climatic impact: 2 x 0 = 0.