WATERVILLE — The 43rd COLA annual Maine Lakes Conference, “Sentinels of Change: What Do Lakes Reveal about Climate Change?” will be from 7:30 a.m. to 3:30 p.m. Saturday, June 22, in the Diamond Building on the campus of Colby College.

The cost is $15 per person and covers registration, breakfast, lunch and materials.

To register online, visit www.mainecola.org or call toll free 855-463-2652.

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