As executive director of the Great Lakes Observing System, she's leading a campaign to map every meter of the lakes' bottom.

When the Great Lakes Water Quality Agreement was passed in the 1970s, eutrophication was the big problem. Eutrophication occurs when too many nutrients enter a body of water, increasing the amount of ...

the impediments to diverting Great Lakes water that were established in an eight-state compact 13 years ago are steadily being breached. “On one hand it’s terrible, because I know the climate will ...

Above: Satellite view of the Great Lakes on a recent clear day (December ... the size of these inland fresh-water seas, which are the world’s largest as a group. They span a west-east distance ...

The Great Lakes region contains nearly 85 percent of North America's surface freshwater, and more than 20 percent of the world's supply of surface freshwater ... [Click here or on the map above for a ...