Neil deGrasse Tyson Says Knowing the Difference Between Lecturing and Communicating Makes You a Better Speaker

Make hard subjects simple, clear, and fun to learn. It's not every day that an astrophysicist makes the rounds of the late-night talk shows. Neil deGrasse Tyson is the exception. He's promoting his new book, Letters From An Astrophysicist, which published just last week. Television and radio hosts …