Oak trees in Michigan are being killed by oak wilt, a fungal infection that’s spread by a beetle in the spring and summer. The Michigan Department of Natural Resources advises pruning or trimming oaks in the fall and winter.

As a source of drinking water for millions of people, responding to freshwater spills requires confronting consequences beyond those in marine environments.

In Marquette County, a $145 million project promises to turn dangerous mining waste into valuable metals. Proponents hope it signals a new era of cleaner mining, but some are skeptical.