April 27, 2016 12:35 pm Countdown to Rio: Samba Dancing World-renowned samba performer Sonia Pessoa teaches here in D.C. She discusses why samba is known as Brazil’s national dance. Local 2:48 DC Irish pub The Dubliner celebrates 50th anniversary 1:59 The Weekend Scene: Maryland Day, Celtic Festival & more 2:47 How exactly DO you farm an oyster? 2:20 French restaurant opens in historic 14th Street building that housed former bank 1:56 The Weekend Scene: Festival season and free entry to National Parks