.Loading...Temperatures broke June records around the globe, from the leafy streets of the American South to the domes of the Vatican. Japan recently had its first-ever 104-degree June day. A port city in Iran has sweltered for days under 122-degree heat. It was even hot above the Arctic Circle, where thermometers in the Russian city of Norilsk pushed to record highs grazing 90 degrees. Generally, a heat wave is when abnormally high heat lingers for two or more days. It’s not just a matter of how hot it is, but also of how unusual that temperature is. Even in a...….Loading...Temperatures broke June records around the globe, from the leafy streets of the American South to the domes of the Vatican. Japan recently had its first-ever 104-degree June day. A port city in Iran has sweltered for days under 122-degree heat. It was even hot above the Arctic Circle, where thermometers in the Russian city of Norilsk pushed to record highs grazing 90 degrees. Generally, a heat wave is when abnormally high heat lingers for two or more days. It’s not just a matter of how hot it is, but also of how unusual that temperature is. Even in a...WW…