We'll figure out a protocol for bringing Dr. Weaver in, and between Dr. Stone and Dr. Weaver they can sort out who answers what.
Since the third assessment report, what have been the biggest breakthroughs, if you like, or what are the biggest scientific understandings that have developed from the third to the fourth report? What are the things that strike you the most?
Maybe I'll start with Dr. Weaver just to give him a chance to get in, and then perhaps Dr. Stone.