Bacho Kiro Cave. (Nikolay Doychinov/AFP via Getty Images) Last year, a genetic analysis of bone fragments representing our earliest known presence in Europe raised a few questions over the steps modern humans took to conquer every corner of the modern world. Whoever the remains belonged to, their family background was more entwined with the East Asian populations of their day than with today's Europeans, hinting at a far more convoluted migration for our species than previously thought. Now, researchers from the Universities of Padova and Bologna in Italy have proposed what they think might be the simplest explanation for the...