Guardian: Norway hopes to boost aid to fight tropical deforestation at a conference tomorrow, and to set in motion a partnership to unlock cash pledged at the Copenhagen summit to help slow climate change. Norway says developed nations have promised $500m (£347m) to fight deforestation by 2012 on top of $3.5bn agreed at Copenhagen, and new pledges at the conference may bring the total aid closer to $5bn. Fifty nations will take part in the Oslo meeting, to be attended by Britain’s Prince …