A tear gas factory in Pennsylvania, G-20 convenes in Argentina, reggae is a cultural treasure

US President Donald Trump and other world leaders are gathering in Argentina for the G-20 Summit and among the group is Saudi Arabia's controversial crown prince Mohammed bin Salman. Plus, a factory in Pennsylvania produces tear gas canisters used all around the globe. And the United Nations announces the newest addition to its list of global intangible cultural treasures — reggae.