Mainstream television networks ABS-CBN, GMA, and TV5 recently inked a deal with World Wide Fund for Nature to be the media partner for the 2011 Earth Hour, a global event happening on March 26 from 8:30 p.m. to 9:30 p.m. The Kapatid Network also agrees to be a partner in raising environmental awareness among the viewing public as WWF runs its Earth Hour 60+ campaign.