Scott Pelley examines the 2013 sarin gas attack that was unleashed on the suburbs of Damascus, Syria, killing an estimated 1,429, including more than 400 children; Charlie Rose speaks to the people behind the popular TED Talks lecture series; Lesley Stahl talks to a man with a mysterious condition called highly superior autobiographical memory. Learn more about your ad choices. Visit megaphone.fm/adchoices See Privacy Policy at https://art19.com/privacy and California Privacy Notice at https://art19.com/privacy#do-not-sell-my-info.