For all humanity's success as a species at the top of its game, it's likely that we'll never finish evolving. From passive selection pressures to those that are self-inflicted , the forces that shape our ongoing evolutionary journey are as fascinating as they are diverse. Now, new research has revealed a previously unknown way in which people living high in the Andes may be continuing to evolve, and the catalyst is surprisingly humble. This population was among the first to domesticate the now-