NEW : . Title: Why do we have to wait for the sun to rise before it can be used as a light source? Voting in the final hours so intense the Web site crashed at times . Pyramids of Giza given honorary status as a `` wonders '' member .
NEW : . Star-studded event in Lisbon , Portugal , unveils the new wonders . Voting in the final hours so intense the Web site crashed at times . Pyramids of Giza given honorary status as a `` wonders '' member .