Hunting for Peru's lost civilizations — with satellites

Around the world| hundreds of thousands of lost ancient sites lie buried and hidden from view. Satellite archaeologist Sarah Parcak is determined to find them before looters do. With the 2016 TED Prize| Parcak is building an online citizen-science tool called GlobalXplorer that will train an army of volunteer explorers to find and protect the world's hidden heritage. In this talk| she offers a preview of the first place they'll look: Peru -- the home of Machu Picchu| the Nazca lines and other archaeological wonders waiting to be discovered.