Van Jones speaks about plastic pollution and how it affects the poor people.

About TEDx, x = independently organized event

In the spirit of ideas worth spreading, TEDx is a program of local,
self-organized events that bring people together to share a TED-like
experience. At a TEDx event, TEDTalks video and live speakers combine
to spark deep discussion and connection in a small group. These local,
self-organized events are branded TEDx, where x = independently
organized TED event. The TED Conference provides general guidance for
the TEDx program, but individual TEDx events are self-organized.
(Subject to certain rules and regulations.)