Got 3 Minutes? Here’s a Crash Course in the History of Life on Earth. | Big Think
http://bigthink.com/robby-berman/got-3-minutes-heres-a-crash-course-in-the-history-of-life-on-earth The tale of life on earth is a long story, but Kirk Johnson, director of Washington D.C’s Smithsonian National Museum of Natural History, can spin the yarn with impressive speed Advertisements