big promises on the second day of the u.n.'s climate conference in scotland. more than 100 nations representing more than 85% of the world's forest are agreeing to end deforestation by 2040. it comes as president biden pledges u.s. support to slash methane emissions along with dozens of other countries by 30% in that same time frame. the big question is what really comes from these big promises? joining me now is a former epa administrator under george w. bush, christine todd whitman. thanks for coming in. two commitments. let's talk about these two commitments that have been made today to end deforestation and pledging to slash methane emissions here in the united states and worldwide. what do you think of these promises? >> well, they're both important, but i agree with you, kate, that promises are one thing and delivering is another. perhaps the easiest is the deforestation. what that will mean is the countries that have relied on it