Ten years after the watershed environmental documentary “An Inconvenient Truth” debuted, climate change is as dire as ever and yet the solutions are right in front of us, say directors Bonni Cohen and Jon Shenk, whose film “An Inconvenient Sequel” kicks off the Sundance Film Festival on Thursday. The film, which follows former Vice President Al Gore on his continued quest to educate and inform the public and world leaders on climate change, is the first in a series of 14 environmentally focused documentaries scheduled to play at the annual film festival in their newly anointed “New Climate” section.