Rich countries want the developing world to agree to mandatory cuts, saying that's where most new emissions come from. Poorer nations say that per person, the rich world is much dirtier and has been polluting for much longer.
From a restaurant owner who hid cash receipts in "seasoned octopus" boxes to a self-proclaimed governor of Alabama who buried gold coins in his yard, here are some of the wildest tax fraud investigations the IRS has undertaken in the past year. More