"Western Lake Erie could be on the verge of one of its worst algae outbreaks in years."

Residents of the area affected by last week's oil spill in the Kalamazoo River filed a federal class-action lawsuit against pipeline operator Enbridge Inc. on Friday.

One of the biggest oil spills in Midwest history seems to have been contained within a 25-mile reach of Michigan's Kalamazoo River. The oil has not reached Morrow Lake and its dam, which makes it unlikely to enter the 80-mile-long Kalamazoo River Superfund site between there and Lake Michigan.

"Federal officials now estimate that more than 1 million gallons of oil may have spilled into the Kalamazoo River through Battle Creek, and the governor is sharply criticizing clean-up efforts as 'wholly inadequate.'"

"Crews were working Tuesday to contain and clean up more than 800,000 gallons of oil that poured into a creek and flowed into the Kalamazoo River in southern Michigan, coating birds and fish."

"Michigan could save billions annually by protecting children from exposure to environmental hazards, according to a study released today."

"Detroit's  anti-lead program -- beset with alleged shakedowns and bogus treatments, missing files, incompetence and mismanagement -- was upended last year after such scorching claims were reported in state and federal investigations." But efforts to reform it have left many lead-poisoned kids untreated and permanently damaged.

When Ray Hott bought a strip of land in DeKalb, Illinois, he did not know that it had been contaminated by toxic chemicals from a gas plant a century before.

"The Minnesota Department of Health on Thursday released a list of hundreds of chemicals that pose a potential health risk. The state's list includes 1,755 substances, among them lead, mercury, arsenic and cadmium. But it also includes many other organic chemicals that include pesticides, flame retardants, dyes and other chemicals used in industry or found in consumer products."

"A single Asian carp has been found for the first time beyond the electric barriers constructed to keep the dreaded invasive species out of the Great Lakes, state and federal officials announced Wednesday."