In what will surely be one of the largest ever, if not the largest, in-kind contributions to a presidential campaign if Al Gore decides to run, NBC Universal announced late last week that its networks will devote an incredible 75 hours of time on Saturday, July 7 to showing Gore's “Live Earth: The Concerts for a Climate in Crisis.” In addition to the entirety of NBC's prime time that night hosted by Ann Curry of NBC News, CNBC will carry seven hours of coverage from 7pm to 2am EDT; Bravo will show the concerts around the world for 18 hours...