David, nice of you to quote James Hansen. If you have read his 350 paper, you know that CCS is crucial to save mankind's behind.

The technology is safe, tested and reliable. That's not the question. There are several commercial plants up and running across the world.

The point is that we need to develop CCS in order to couple it to bioenergy, so that we can generate carbon-negative energy -- which is what we need to actively remove CO2 from the atmosphere.

It seems like you often forget this. CCS coupled to bioenergy is the key to the climate fight. No other renewable energy technology is carbon-negative. They all remain carbon-neutral at best. And we know carbon-neutrality is not nearly enough. We need to go from 387ppm to 350ppm CO2. You know this.

The liquid CO2 train would be twice the size of the coal train?  Is that correct?  What happens when the CO2 train crashes?

The CO2 gas hovers along the ground in a cloud that kills all the humans and animals in its path.

What happens if the CO2 pumped underground leaks, all at once from an earthquake?  Same thing.

How much more coal needs to be mined to make up for the energy used to separate and liquify the cO2?  40%? And rail miles traveled by CO2 trains, and fossil fuel used in mining and transportation? 100%?  

CCS is a mirage.  An imaginary GHG oasis hallucinated by fevered minds in the employ of the coal industry.  As the mighty Costanza said, "It's not a lie if YOU believe it."

http://amazngdrx.blogharbor.com/blog John Schneider, Northern Wisconsin

Green Algae looks promising and may be a better fix. CCS will not work because we can't hollow out enough cavern space to store all we are creating and the expense of hauling it around or transporting it will make it cost prohibited. I have seen some examples of where algae is being used to some limited success. The stuff eats co2 and burps oxygen and sounds perfect. I don't know how we are going to handle the first algae pond that fails? Of course it may be more environmentally sound to be slimed than covered up with a toxic mix of coal sludge from the slurry ponds. The peripheral issues such as coal waste water and Mountain Top removal always take a back seat to co2 emissions.  The native Appalachians will never be able to contain either.
     Exploited from the beginning of the last century when the coal and mineral was snatched up by North East interest and then John Mayo's broad form deed stole the land. Most politicians from the area are coal corporation and bought for. The rest live on the crumbs that fall from the coal company table in the form of mining related jobs although they are becoming fewer since MTR and regular strip mining is less labor intensive.  If the rest of the nation does not stop these two practices I am afraid the sparse population and voting base of Appalachia will never overcome the Coal Corporation lobby  to stop MTR and sludge ponds.

The eons of time and nature was good to us down here. It was not until we become civilized that destroying our habitat become fathomable or fashionable.