About Rio+Social (from their Facebook Page)
Rio+Social is a global event to give voice to those who want to change the world for the better. It is a joint initiative of the UN Foundation, Mashable, 92nd Street Y, Ericsson, EDP, Planeta Sustentável and LiveAD.
Linkin Park joins Rio+Social over VSee
You can watch the live stream here now. (Jun 19, 8am-6pm EST).