but they didn't reckon on zack kopplin. starting at the grass roots in his home state of louisiana, he's become a formidable adversary nationally, speaking, debating, button-holing politicians, and winning the active support of nobel laureates, the american association for the advancement of science, the new orleans city council, and tens of thousands of students, teachers and others around the country who have signed on to his campaign. troublemakers all. zack is now 19 and a history major at rice university in houston. he's with me now. welcome to the show. >> thank you so much for having me on. >> what was it about the louisiana science education act that you didn't like? >> well, this law allows supplemental materials into our public school biology classrooms to quote, "critique controversial theories," like evolution and climate change. now, evolution and climate change aren't scientifically controversial, but they are controversial to louisiana legislators. and basically everyone who looked at this law knew it was jus