Neil Richards: Objective truths of science are unfounded in belief systems. To deny objective truths is to be scientifically illiterate, he says. He adds that without the First Amendment there would have been no civilization or society as we know it. "I will take a positive outlook and say with all of my efforts and the efforts of many others on the landscape, it may be without all of us, it would have been much worse"
Neil deGrasse Tyson—world-renowned astrophysicist, Emmy-nominated host, and author—is one of the most popular and influential figures in modern science. He joins to discuss his cosmic career and new book, “Starry Messenger: Cosmic Perspectives on Civilization.”