You Can't Believe Everything You Read, on the Internet or by Joan Rivers

Charles Seife explains why, when it comes to the Internet, you shouldn’t believe everything you read—and how to tell the difference between truth and fiction. Francisco Goldman talks about trying to make sense of Mexico City, one of the world’s largest metropolises. We’ll find out how many words in the English language were once considered linguistic mistakes, slang, or just plain wrong. And the one and only Joan Rivers takes us inside her everyday world and shares her thoughts on life, celebrities and pop culture.