This year, Project Learning Tree (PLT) – an award-winning program of the American Forest Foundation that applies the forest as “a window on the world” to educate PreK-12 and environmental educators – is celebrating its 40th anniversary.

In Colorado, which was one of the first 10 states to initially adopt PLT, this celebration will be formally recognized with a one-day workshop on Sept. 17 at the Lone Star School in Otis, Colo., in the same location as the first Colorado PLT workshop in 1976.

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