蜜芽传媒

Lightning hotspots are spotted from satellites, as Professor Rachel Albrecht explains. Map showing the average yearly counts of lightning flashes per square kilometer from 1995 to 2013. Areas with the fewest number of flashes each year are gray and purple; areas with the largest number of lightning flashes鈥攁s many as 150 per year per square kilometer鈥攁re bright pink.
Credit: NASA Earth Observatory 鈥� Joshua Stevens