In a 1946 essay, George Orwell wrote that “to see what is in front of one’s nose needs a constant struggle.” It’s not just that we’re easily misled. It’s that, by “impudently twisting the facts,” we can convince ourselves of “things which we know to be untrue.” A whole society, he wrote, can deceive itself “for an indefinite time,” and the only check on that mass delusion is that “sooner or later a false belief bumps up against solid reality.” Science is one source of that solid reality. The Trump Administration seems determined to keep it at bay, and the consequences for society and the environment will be profound.