Brian, as you probably know, natural gas produces about 50% of CO2 per energy unit compared to coal. And, does not produce mercury etc. But, yes, I always say that every time new fossil fuel including natural gas is discovered or a new way of getting it out of the ground is introduced, is a bad thing. That is because we will burn it all: coal, natural gas, oil.

But, it will make a difference if we can slow the rate at which we burn, or at least slow the increase in rate: gives us more time to adapt.

Chris