In a well-monitored storage site, it is always possible to release CO2 in a controlled manner in the unlikely event that it threatens to escape. Such a release is certainly no worse than ignoring the emission in the first place.
There's an overemphasis on conservation and other idyllic energy sources that can be harmful in that it hampers new technology and innovation.
Technologies simmer along before they are feasible. That simmer can be short or long, but then they get traction. And from there to being huge is a couple of decades.
The idea that somewhere in the desert far away you have a CO2 absorber that's removing the CO2 from the air is an attractive one. It's a costly process that many will say is too expensive, but so are fuel cells in cars. It's a matter of political will to move this forward.
A car produces about one pound of CO2 per mile. There is no problem with collecting the CO2 in the tailpipe, but one might easily end up with a trailer hitched to the car for carrying all this CO2 back to the filling station. The gas burned from a 15-gallon tank would fill up five 60-inch-tall gas bottles.
Fossil fuels will run out not because of limited resources but because of the environmental impact. If I can solve that impact, I have basically increased the resource base by a vast amount.
My personal view is the true long-term storage is mineral carbonates, which is some form of accelerated weathering.
The fact that companies are getting into building power plants that collect their own CO2 on-site shows there's some leadership in that industry. Some industries have seen the writing on the wall: that carbon will have to be managed.
Injecting CO2 into an underground reservoir would certainly change the local environment and thus affect the organisms that live there. Some will thrive, and others will suffer. While we should minimize such impacts, they cannot be avoided completely. The same happens when one plows a field, builds a house or a road, or waters a lawn.
If we want to stabilize the carbon dioxide in the atmosphere at some level - it really doesn't matter which level - you end up having to stop emissions virtually completely.
