In August I interviewed University of Regina researcher Peter Leavitt (pictured) about a federal study that showed that lakes downstream of Wascana Creek were heavily polluted with nitrogen. With new federal guidelines set to come into effect, Regina is looking at spending $850 million* to build a new sewage treatment plant to reduce the amout of nitrogen and other pollutants we release in our waste water.
On Friday, an article co-authored by Leavitt and other researchers from the University of Alberta and University of Washington was published in Science magazine (here’s a link to a free abstract of the article).
It’s got a fair bit of technical jargon, but from information gleaned from a three-page press release that the University of Regina released yesterday, it seems that researchers tested deposits at the bottom of 36 lakes in the northern hemisphere. What they found was a significant increase in nitrogen levels. This wasn’t confined to lakes near sites of human habitation, either. Rather, it included remote bodies of water in the far north.