The results are in, and according to this story at CBC Manitoba, North Dakota's Devils Lake is free of twelve species of invasive plant and fish that biologists were testing it for. That's the good news for Canada's Lake Winnipeg, the recipient of water flowing from Devils Lake into the Sheyenne River. The bad news is that tests did uncover several species of algae and fish parasites. Now the US and Canada get to argue about who's paying for the filtration system between the two bodies of water. (insert requisite Celine Dion joke here) (insert requisite Jon Stewart/Kids in the Hall retort here). To read the full report, which includes a list of the species surveyed, click here (pdf). For a detailed pathogen survey, click here (pdf).