Arctic cold kills tree insects, and more

This winter’s arctic temperatures have had at least one beneficial impact: They’ve killed ash borers, gypsy moths, and other tree-eating insects.

Arctic cold kills tree insects

This winter’s arctic temperatures have had at least one beneficial impact: They’ve killed about 80 percent of the ash borer insects destroying ash trees in the Midwest, as well as large percentages of gypsy moths, the hemlock woolly adelgid, corn earworms, and the citrus-destroying cottony cushion scale.

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