Mankind must cooperate to reduce greenhouse gas (GHG) emissions to prevent a catastrophic rise in global temperature … the appropriate way of evaluating how the costs of reducing GHG emissions should be shared across the present and future …

addressed together – and identifies policies on the national and global level that could spur mutually reinforcing progress …

, as measured by ecological footprints, mostly because of unsustainably large carbon dioxide emissions. Two of the biggest …

problem, and to initiate deep and early cuts in greenhouse gas emissions. Above all, it challenges the entire human community …