Emma Lembke, a first-year student at Washington University in St. Louis, is CEO and a Co-Founder of the group Log Off. She poses for a photograph at McMillan Hall on the Danforth Campus in St. Louis.

2021-11-10 -- Emma Lembke, a first-year student at Washington University in St. Louis, is CEO and a Co-Founder of LOG OFF, an international youth movement dedicated to rethinking social media's effect on teenagers, and mitigating its potential harm. She poses for a photograph at McMillan Hall on the Danforth Campus in St. Louis Wednesday, Nov. 10, 2021. The group was founded by and is run by teens themselves, with leaders in the group coming from nine different countries. More about the group can be found on its website at: https://www.logoffmovement.org/. Photo by Sid Hastings/Washington University.