The estimate is included in new documents filed with the federal Securities and Exchange Commission.

DEQ rules being revised for the first time since 2011

Lake Michigan still has 15% ice cover, higher than normal for April

Brocken Inaglory, Wikicommons

Western Michigan University Biological Sciences Professor Stephen Malcolm says the population of the monarch butterfly in North America has dropped over the last 20 years. 

Environmental Protection Agency is considering a range of options for cleaning up PCB contamination