Environmental Protection Agency IMAGE.
Tara Eilers of New Era, Mich, an intern with Grand Valley State University, studies the reaction of an alkalinity test on Lake Michigan water collected from closer to shore from aboard the W. G. Jackson of GVSU on Sunday, June 24, 2012, in Manitowoc, Wis. As part of the Environmental Protection Agency's "Making Lake Michigan Great" tour, researchers invited the public aboard the boat to educate them and collect water samples from the lake.