U of M research confirms they're in tap water around the world
This type of blue-green algae has sickened humans and killed dogs.
3M says the contamination could have come from other sources.
There have been nine boating deaths on Minnesota waters this year.
Levi Wuollet disappeared in the Crow River Monday afternoon while swimming.
The 19-year-old drowned after getting into trouble while swimming with friends.
The 18-year-old went missing on Monday evening.
40 percent of the lakes, rivers, groundwater and streams in Minnesota are said to be impaired or polluted.
Researchers say if current trends don't change, a lot of lakes could be too polluted for fish 50 years from now.
A friend found the canoe with the man's dog inside.
Even a high-powered boat would have trouble escaping the waters there, the U.S. Army Corps of Engineers said.
You can get all around Lake Minnetonka now without ice getting in the way.
Authorities say the ice was less than an inch thick in some areas.
A fire ravaged the city last year, destroying several businesses.
Scientists figured out where the river disappears to.
Tests confirmed the water is safe.
Dayton describes his water quality target as "ambitious, but achievable."