The carbon capture technology is available. The concern that many companies have is that if they take just the regular carbon dioxide that goes out of a stack, at the top of a chimney, it's already at atmospheric pressure. It's very expensive to compress it back down into usable form, and you may generate more CO2 by doing that than you're capturing. So there needs to be some technological improvement for that kind of carbon dioxide.
At other places where it's more concentrated, it is being used now. In Weyburn, Saskatchewan, it is being used to take CO2 coming from the United States. It goes into the Saskatchewan oil fields and is being sequestered and is pushing more oil out. In the United States, the CO2 technology is very much used across the country. Certain elements of it are there, but when it comes to the capture of CO2 when it's already at atmospheric pressure, that's one that needs to have some research. It's being done and people are working on that to come up with technologies to be able to put that in as a more mainstream or lower-cost ability to do that. That gets to some of the comments that Dan made on the research that is being done in that area.