For the past year, the construction site of a new airport in Mexico City has been the talk of the mammoth world. Heaps of fossils started turning up there in October 2019. “There are hundreds,” archaeologist Pedro Sanchez Nava told Phys.org. “There are too many.” Scientists now sit alongside backhoe operators as they break new ground, monitoring the soil of the ancient lake bed for molars, ribs, and tusks. While excavation is ongoing, the 2,000 bones unearthed thus far likely make up the largest mammoth find in history. With the…