Canadian researchers have been traveling to Minnesota to view plant specimens gathered in the Arctic decades ago by a boot-clomping, chain-smoking librarian who grew up near Duluth. The work of Margaret Oldenburg is finding new relevance as a way to better understand the effects of climate change.

The Bois Forte Band of Chippewa and the Ely Folk School have teamed up on a new map that restores more than 100 Ojibwe names to lakes, rivers and other significant places in northern Minnesota.