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Dormant

Emerald Ash Borer

Hold Off On Ash Tree Pruning Or Risk Infestation

Experts say don’t prune your ash tree yet or it could make it more vulnerable to the emerald ash borer.

09/06/2011

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In Lake Superior, A Problem Algae Lies Dormant

On the gently curving beach at Knife River, just north of Duluth, a cluster of wave-lapped boulders is a good place to find Didymosphenia geminata, a sometimes-slippery single-celled alga.

11/14/2010