I will give you a very quick answer. If I may, I will then ask my colleagues to tell you what we based our comments on.
We take for granted that the government has recognized the scientific analyses conducted, namely by the United Nations' committee on climate change, as well as other scientific reports that are based on decisions made by Canada to reduce greenhouse gases. I take that as a given.
I do not challenge science. I am not a scientist, and I am not an expert in the science of climate change as long as the government, on the whole, recognizes that the problem exists and bases its position on scientific facts, I will act accordingly.
If you want any further information, my colleagues will be able to tell you more about the scientific aspect of the question.