Northern Hemisphere faces 4-fold rise in extreme heat periods: study | 24hr periods where daytime & nighttime temperatures stay exceptionally high pose a significant risk to human health as the body doesn’t get a chance to cool off after the Sun sets. These could quadruple by the end of the century

Northern Hemisphere faces 4-fold rise in extreme heat periods: study | 24hr periods where daytime & nighttime temperatures stay exceptionally high pose a significant risk to human health as the body doesn’t get a chance to cool off after the Sun sets. These could quadruple by the end of the century https://ift.tt/2tS6aeE