Social media can certainly motivate people for good and otherwise. Calls to action to clean up the oceans, rivers, and beaches have galvanized volunteers and gone viral. But given the magnitude of the problem, how should we assess the impact? Paul Solman looks at one YouTube-focused campaign that has hit a particular chord, as part of our continuing coverage of the global plastic problem.
Stream your PBS favorites with the PBS app: https://to.pbs.org/2Jb8twG
Find more from PBS NewsHour at https://www.pbs.org/newshour
Subscribe to our YouTube channel: https://bit.ly/2HfsCD6
PBS NewsHour podcasts: https://www.pbs.org/newshour/podcasts