Here are some of the resources we used to develop Tuesday's show:
Robin Williams battled demons for decades before his death
My first big break in Show Biz (My Robin Williams Story)
Robin Williams, Oscar-Winning comedian, dies at 63 in suspected suicide
Second night of unrest in Missouri town following Michael Brown shooting by police
Video: Second night of unrest in Missouri
John Kerry insists any US moves in Iraq will not involve combat troops
Stoicism and Sacrifice: Yazidi men in Iraq yield seats on rescue chopper
WHO Ethics Panel: Unproven drugs can be used on Ebola patients