Ever since two hikers happened upon the mummified body of Ötzi the Iceman on a high mountain pass in the Ötzal Alps in 1991, scientists have been working to figure out who he was and where he came from. Intriguingly, comparison of the Iceman's genome with DNA from present-day populations linked him not to mainland European groups, but to people from the Mediterranean island of Sardinia. Click here to read more in Scientific American.