energy April 19, 2017 7:04 pm What Green Initiatives Are 5 of the Most Valuable Companies Involved In? In honor of Earth Week, NBC looked at 5 of the most valuable companies to see what kind of green initiatives they are engaged in. Local 14:23 NYPD arrests around 100 protesters at Columbia University 29:11 NYPD moves in on protesters at Columbia University making dozens of arrests 1:45 NYPD enters Columbia University in riot gear to clear protest 1:14 El Minuto 4/30 Spanish Edition 1:02 El Minuto 4/30 English Edition