(MN) Minneapolis Star Tribune – An unmanned research submarine — painted yellow — was launched in Lake Superior this week. The vessel is on a two-week test drive that scientists hope will prove the feasibility of using a submarine to monitor the lake more cheaply and reliably than is possible with manned boats.

“It fills a sampling niche by swimming the lake without us having to be out there,” said Jay Austin, a physicist at the University of Minnesota Duluth who is overseeing the sub’s operation. “Being on a boat for two weeks would be terribly expensive.” More