Without the migration of 6 million African Americans from the South to the North in the US, the music, literature and art we know today might not have come to exist, explains journalist Isabel Wilkerson. Watch her full talk on the story behind the Great Migration: http://t.ted.com/uAyjgh9 | TED

Dating apps might expand your options — but not so much your matches. Here’s how to work around that and get closer to finding your person: http://t.ted.com/WjTfDQF | TED