2010 saw the 40th anniversary of which pro-environment observance, first held on April 22, 1970?

What is the full title of the 2010 sequel in which Michael Douglas returns as greedy financier Gordon Gekko? Which quarterback was named MVP of Super Bowl XLIV in 2010? Who played Maid Marian to Russell Crowe's Robin Hood in the 2010 film? 2010 marked 50 years since the invention of which device, which revolutionized eye surgery and outdoor light shows? Which 2010 film, set in the animated kingdom of Far Far Away, was billed as the final chapter of its series? Who played the Mad Hatter in Tim Burton's 2010 film "Alice in Wonderland"? Which 2010 DreamWorks animated film features a young Viking named Hiccup who befriends an injured dragon? The 2010 documentary "Exit Through the Gift Shop" examined which anonymous British street artist, known by a 6-letter n…