One of America's best-known scientists, astrophysicist Neil deGrasse Tyson has spent much of his career sharing his knowledge with others. He has an incredible talent for explaining complex concepts in a clear and accessible manner.Tyson fell in love with New York City's Hayden Planetarium the first time he visited it as a child. Amazingly enough later in life he ended up becoming its Director. Neil has served as host of NOVA ScienceNow and the StarTalk Radio podcast.