Phil Plait is an astronomer and science communicator. He wrote and hosted “Crash Course Astronomy”, which has over 33 million views on YouTube, and was the head science writer for the first season of “Bill Nye Saves the World” on Netflix. He is the author of three books, as well as the blog “Bad Astronomy” where he evangelizes science with joy and passion. He has lived in Colorado for more than a decade with his wife and daughter (and an increasingly four-legged menagerie of horses and goats). His first TEDxBoulder talk was “How to Defend the Earth from Asteroids”, and he knows that science needs to be daring to search for truth… including acknowledging missteps along the way.