Treetops glowing during storms captured on film for first time

Penn State scientists have filmed treetops glowing during thunderstorms for the first time, confirming a phenomenon theorized for over 70 years. Using a custom UV telescope mounted in a minivan, they captured tiny electrical pulses called corona discharges glowing at leaf tips during storms in North Carolina. These discharges produce hydroxyl, a natural air-cleaning compound that breaks down greenhouse gases and other pollutants, with potential implications for forest and atmospheric health.