on science? why are there people instinctively like bachmann that think there's a big win if you oppose vaccination? >> it's the base they are playing to where science is often inconvenient. you look at, say, global warming, and it's undeniable. rick perry gets out there and michele bachmann that says it's a hoax. rick perry can't name one scientist, but there's a reason why. >> let me go deeper. >> i'm sure it's their own beliefs. they don't want to have to deal with the consequences and they are dealing with -- >> okay. let's look at the history, what was said about evolution. let's look at this montage, republicans on evolution. >> there is a controversy amongst scientists about whether evolution is a fact. >> this comes from a politico.com reader and was among the top vote-getters in the early rounds. want a yes or no? >> do you believe in evolution? >> yes. >> i'm curious, is there anybody on the stage that does not believe in evolution? >> yeah. >> may i just add to that?