What we can learn from the Ioway tribe's 1837 map

A map created by leaders of the Ioway Tribe in 1837 to defend claims of their homeland offers a powerful perspective on history, one that challenges how we understand early American mapping. We speak with author William Green and tribal historian Alan Kelley about what this map reveals. Plus, a look back at the 2020 Midwest Derecho and what scientists have learned in the years since.