Thank you.
Dr. Stone, you brought forward the comments that the target we're looking at for 2020, according to the international climate change panel, is 25% to 40% below 1990 levels. That's a reasonable target, according to you.
I'm not asking for a policy opinion, and I would like a response from everyone else as well.
In your scientific assessment, if that is the kind of target that I think universally we're talking about, at a minimum about 20% with as much as 40% below 1990 levels by 2020, is it your assessment, as scientists, that, to quote Mr. Warawa, 20% below 2020 from 2006 levels would consist of a “tough” target? Is 20% below 2006 levels by 2020 qualifiable, in your scientific opinion, as a “tough” target?