I've put off doing a "the latest from Copenhagen" post as events keep shifting and along with them the outlook for a real agreement. As of the point that I'm typing this the outlook just swung from dismal to hopeful (a qualified hopeful, of course - see the bit about "3C"), but that could change by the time you're done reading it.
China signalled concessions on monitoring of emission curbs, and the US said it would commit money for developing countries.Leaders are likely to have big choices to make when they meet on Friday.
However, a leaked document from the UN climate convention indicates the best deal likely here will not keep the temperature rise below 2C (3.6F). Even if countries implement their biggest pledges, a rise of 3C (5.4F) is indicated, it concluded.