Edmonton Journal: In the spirit of this holiday weekend, I’d like to say thank you to everyone who has written and phoned in response to my feature last weekend on carbon capture and sequestration. And I’d like to respond by answering some of your questions. The most common had to do with potential risks and hazards of pumping huge amounts of compressed carbon dioxide underground. Readers wanted to know if I had I heard of the Lake Nyos incident, where 1,700 people were asphyxiated in their …