The Minnesotans traveled by bus, van and train for the march to raise awareness about climate change and urge world leaders to act.
The University of Minnesota has completed its renovation of the famous lab on the Mississippi River, adding new research devices that will enable more extensive wind and wave tests.
Top economists outlined ways to reduce greenhouse gas emissions that contribute to climate change.
The Department of Natural Resources confirmed the presence of zebra mussels on Christmas Lake just last month.
The project still needs federal environmental review and State Department approval.
With all the food waste generated at the fair, there is great potential for more composting. The main stumbling block will be all those plastic cups.
Before hazardous waste laws existed, the auto manufacturer dumped paint waste and other material at the site near the Mississippi.
The town is one of a small, but growing, number of Minnesota communities with a century of weather records.
Last year the Gourley Brothers company applied for and received a permit that would allow its farm to pump up to eight million gallons of groundwater a year. Neighbors who oppose the large feedlot say the Department of Natural Resources didn't do its homework before issuing the permit
Environmental group says oil line comes too near wild rice beds.
Some of the anger over the facility comes from the fact that it's located on a tributary just six miles from the Buffalo River, an area they gets special protection from the National Park Service.
It's the pollution equivalent of taking 750,000 cars off the road every year, said Mike Harley director of the Environmental Initiative, which runs the effort.
The Minnesota Pollution Control Agency has said other routes as well as alternatives to the project should be considered, and MPCA officials disagree with the state Department of Commerce on how the route question should be handled.
At the university, a new source of water for 200 toilets and 600 students is less than a year old but "working better than even we expected it to," said Cathy Abene, the university's principal civil engineer.
Treated sewage water is getting used again
in a few places, watering golf courses, washing trucks and sweeping streets. The economics in a water-rich state make for slow change, but those who have tried it think it could be a way of the future.