If a week is a long time in politics, then is two weeks long enough for world leaders to finally get to grips with the single biggest challenge we all face - limiting the effects of global climate change?
The answer has to be yes, if only because the consequences of any other outcome would be unthinkable. The start of the 2007 UN Climate Change Conference (otherwise known as COP 13) in Bali today coincides with alarming reports that the tropical belt that girdles the Earth's equator is expanding - pushing its boundaries out towards the poles at a rate not predicted by current computer models, which anticipated such developments only towards the end of this century.