Probing the Drake Equation: Are We Alone? | Fred Crawford | TEDxYouth@SAS

The sheer size of the known Universe is staggering. Because of its immensity, we are constrained by the known laws of physics in a dilemma: although the possibilities in the Universe are nearly infinite, we can only hope to ever know a small portion. In his talk, Fred Crawford asks and explores the question: how many extraterrestrial civilizations exist that are capable of radio communication and are actively trying to do so? Fred Crawford has been teaching physics for the past thirty years, having taught in India, Thailand and Singapore. Although an American citizen, Fred was born and raised outside of the US. When not pondering physics, Fred likes to cook. This talk was given at a TEDx event using the TED conference format but independently organized by a local community. Learn more at http://ted.com/tedx