-Live Earth: The Concerts for a Climate in Crisis [special] NBC at 8:00pm More than 100 musicians--including Madonna, Red Hot Chili Peppers, James Blunt, Jack Johnson, John Legend, Black Eyed Peas, and the reunited Spinal Tap and the Police--perforn during this series of concerts, held around the world. Sundance has the most coverage-22 hours-beginning at 4am. BRAVO airs 18.5 hours starting at 8am; CNBC's seven hours of coverage begin at 7pm, and NBC does the primetime at 8pm.