find ways to reduce our carbon emissions. each country is trying to figure out how to do that most effectively. here in australia under the leadership of the prime minister you moved forward with a bold strategy. in the united states, although we haven't passed a -- what we call a cap and trade system, an exchange, what we have done is taken steps to double fuel efficiency standards on cars, which will have an enormous impact on removing carbon from the atmosphere. we've invested heavily in clean energy research. we believe very strongly that with improved efficiencies and a whole step -- a whole range of steps that we can meet, the commitments that we made in copenhagen and cancun.