The burial mounds at Grand Mound have been a part of Joann Johnson’s family since her grandfather, Fred Smith, purchased the land in 1889. Smith left his home near Rochester when he was 10 years old ...

That's why White and his team point to places like Farnsworth House and Monks Mound in Cahokia, near St. Louis. The prehistoric earthen mound has been slumping, and experiencing accelerated erosion, ...