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NEWPORT, Ore. – Four researchers from Oregon State University will discuss issues related to climate change during a series of Earth Day presentations on Saturday, April 21, at OSU’s Hatfield Marine Science Center in Newport.

The lectures, which are free and open to the public, will be held in the Hennings Auditorium of HMSC’s Visitor’s Center.

Karen Shell, from OSU’s College of Oceanic and Atmospheric Sciences, will speak on “Uncertainty and Climate Change.” Her talk begins at 10:30 a.m.

At 12:30 p.m., Mark Hixon, a professor of zoology, will discuss “Ocean Warming: Threats to the Pacific Northwest.”

Peter Clark, a professor of geosciences and an expert on glaciers and polar ice, will give a lecture on “Ice and Sea Level Changes: Where Are We Headed?” that begins at 1:30 p.m.

Jeffrey Shaman, from the College of Oceanic and Atmospheric Sciences, will blend his studies of human health and atmospheric sciences in a talk called “Change, Human Health and Local Ecology.” It begins at 3 p.m.

For more information, contact Bill Hanshumaker of OSU Extension Sea Grant, at 541-867-0167. He is the public marine education specialist at OSU’s Hatfield Marine Science Center.