The effluent stream of an East Chicago, Indiana, wastewater treatment plant is clean enough to fool salmon into spawning there.

"Government regulators have found high levels of manganese, a dangerous metal that can affect the brain, in the air outside a school in eastern Ohio."

"If taxpayers end up paying only 1 percent of the cost of cleaning up PCB contamination in the Fox River, that could be between $10 million and $15 million. If the taxpayer obligation reaches 10 percent, the figure becomes $100 million or more."

"Federal stimulus funding has provided $242 million to Illinois to weatherize more than 25,000 homes, but poor oversight of that work puts the funding at risk and in some cases puts the residents of poorly weatherized homes in danger, an audit report warns."

"The Great Lakes are under threat from the Asian carp, an invasive species of fish whose presence is pitting neighboring states against Illinois in a showdown with no clear resolution."

"There are places where some wildlife that once thrived, are now gone. In Wisconsin, the Pine Marten has been wiped out. The shy animal looks a bit like a ferret. Pine Martens are members of the weasel family. Jeff Wilson and Dan Haskell are trapping pine martens in Minnesota for relocation to northern Wisconsin."

"The Department of Natural Resources' efforts to combat chronic wasting disease -- an illness that threatens Wisconsin's entire deer herd -- have had little effect after seven years and nearly $41 million in state and federal spending, data and interviews indicate."

"A push to scrap a Minnesota law barring new nuclear power plants gained a pair of influential supporters Tuesday, adding intensity to a debate before a state Legislature that has narrowly resisted the change."

"Fish that have the potential to devastate the Great Lakes ecosystem may be just a few miles from Lake Michigan."

"The Environmental Protection Agency is working to clear contaminated soils from a former recycling business site in Wayland [MI]."

"The two rivers that converge at Marietta [OH] are among the 10 most polluted in the country, according to a new environmental report."

"Congress approved legislation Thursday that includes $475 million to restore the Great Lakes by combating invasive species, cleaning up highly polluted sites and expanding wetlands."

"Congressional negotiators reached a deal Tuesday that would effectively exempt 13 ships that haul iron ore, coal and other freight on the Great Lakes from a proposed federal rule meant to reduce air pollution."

"An Environmental Protection Agency proposal that would compel [Great Lakes] vessels to burn cleaner fuel and upgrade their engines has sparked a furious behind-the-scenes lobbying campaign that has come to a head this week, pitting congressional Democrats against a Democratic administration as lawmakers allied with Midwestern and Alaskan shippers pressure the EPA to back down and protect jobs."

"Michigan’s 19 coal-fired power plants will need to install technology to reduce mercury emissions by 2015, according to new rules finalized this week."