No one knows what happened to Amelia Earhart when she disappeared 73 years ago flying around the equator — the theories range from her crashing into the Pacific to being executed by the Japanese for being a spy. But now, some bones found on the uninhabited Pacific atoll of Nikumaroro suggest that she and her navigator Fred Noonan crashed there, died as castaways, and were eaten by crabs, says the Guardian's Chris McGreal.