BAKU: The European Union on Saturday (Nov 23) raised an offer by rich nations to help poor countries worst hit by climate change to US$300 billion a year in a bid to salvage talks that the developing world warned were on the brink of collapse. Negotiators worked through the night in a windowless sports stadium in the Caspian Sea city of Baku in a search for compromise as the two-week UN climate talks dragged into an extra day. In a year set to be the hottest ever recorded, developing nations