administrator bridestine, thank you for being here. do you believe greenhouse gases are the primary cause of climate change? >> yes, the national climate assessment that includes nasa and the department of energy and it includes noaa has stated it is extremely likely that human activity is the dominant cause of global warming and i have no reason to doubt the science that comes from that. >> to recruit the scientific consensus which includes many nasa researchers that the climate is changing in humans are the leading cause? a >> yes. >> is it fair to call this an evolution of your views? >> yes. >> you commit to supporting the funding and integrity of climate science at nasa? >> without question. >> thank you, administrator bridestine. you and i had many conversations in person and on the phone and i just want to recognize your evolution on this issue. i think it is essential for one of the premier science agencies of the federal government for you to abide by the science. i think it is especially important because as you know you are