Forests
A team of Penn State researchers has captured the first natural observations of trees emitting faint electrical glows, known as corona discharges, during thunderstorms. The discovery, made in North Carolina, confirms a phenomenon long theorized but never seen outside laboratories. These glows may contribute to air cleaning by producing hydroxyl radicals.
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A social media image shows preschool children balancing on a storm-felled tree in Dalarna, sparking concern among viewers. Forestry worker Linnéa Nykvist warns of the dangers of root plates. Storm Johannes left the forests filled with such hazards.
March 22, 2026 21:27