Since anti-government protests erupted in Iran last year, people around the world have taken to social media to show their support. That includes an Iranian American ballerina Tara Ghassemieh, who is tapping into her heritage and her art to express solidarity with those pushing for more rights. Julia Griffin reports.

In a 2-hour #documentary, #FRONTLINE explores the promise and perils of #AI.

Nice tribute to Cokie Roberts, who passed away from breast cancer. What a loss.