Europe is in the grip of heat wave. It’s so hot in Germany and Switzerland that an entire swath of the River Rhine has dried up completely, according to a new report. The water levels in a long stretch of the 766-mile-long river, which runs from Lake Constance to Rhine Falls, are disturbingly low. Earlier this week, about a ton of fish have died of soaring temperatures in Swiss waters, The Rhine specifically rose about 4 degrees higher than normal for the summer season.