 Many agreed to go back to work, but 50 held out. They were charged with mutiny. But yesterday, the Pentagon announced all 256 will now be exonerated. ABC's Rihanna Nally. Instagram is opening up its data for research. Meta is allowing researchers to study Instagram's effect on teen mental health. The pilot program will analyze usage data over six months to uncover social media's impact. I'm Michelle Franz on ABC News.