monday night, and that's climate change. environmental groups have criticized both candidates in recent days for sidestepping the topic in the last debate when they bragged about big energy source, oil, gas, and coal. >> we have increased oil production to the highest levels in 16 years. natural gas production is the highest it's been in decades. we have seen increases in coal production and coal employment. >> this has not been mr. oil or mr. gas or mr. coal. i'll get america and north america energy independent. i'll do it by more drilling, more permits and licenses. >> for scientific perspective on the politics offal all of this, i'm joined by bill nye, of course, the science guy. maybe we should start with this. we would just set up our segment by saying how they did not necessarily support, is it