Independent: Barack Obama and congressional leaders are preparing rapid legislation to cut US emissions that cause global warming and to kick-start a clean energy revolution. Two bills are to be introduced as soon as the President-elect takes office in January. One will provide $15bn (£10.1bn) a year to encourage innovation in renewable energies as part of a thorough overhaul of the highly polluting US energy system. The other will pave the way to setting up a system of tradable emissions permits …