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Tracking the origin of southern California's latest invasive pest
September 25, 2022
SAN DIEGO, Calif. — In 2012, a crop of California’s most prized ornamental trees was overrun by an invisible invader. The growing shoots of coral beans — the official city tree of Los Angeles — began wilting and falling away, revealing stems that had been hollowed out from the inside by the caterpillars of Erythrina […]
Tracking weeds to stop them in their tracks
June 14, 2022
MADISON, Wis. — Not that long ago, weeds spread at a much slower rate. Seeds would spread to nearby soil and move perhaps a few feet each year or would be transplanted by birds who flew with them several miles away. In today’s interconnected world, though, weeds can hitch a ride on a truck, boat, or […]