Now this is Cave Johnson. The reason why we put deteri- Wait... WHY AM I ASKING WHY. ITS ABOUT WHY NOT. Anyways we put deterium in the lake because SOMEBODY's (dehman's) Nuclear power plant is creating nuclear waste... Caroline: Mr. Johnson, we're still making science. Cave Johnson: I know but you, olympians, war heroes, gladiators and astronauts, destroy the NUCLEAR powerplant without destroying the Solar powerplant (middle) and the steam powerplant (left)