A $2.2 million expedition is hoping to finally solve one of America's most enduring mysteries: What exactly happened to famed aviator Amelia Earhart when she went missing over the South Pacific 75 years ago? A group of scientists, historians and salvagers think they have a good idea, and are trekking from Honolulu to a remote island in the Pacific nation of Kiribati starting Tuesday in hopes of finding wreckage of Earhart's Lockheed Electra plane in nearby waters.
