Oh, and it effects the economy too . . .

https://www.washingtonpost.com/politics/study-finds-the-warmer-it-gets-the-more-world-economy-hurts/2015/10/21/2debcaba-7816-11e5-a5e2-40d6b2ad18dd_story.html

Lead author Marshall Burke of Stanford and Hsiang examined 50 years of economic data in 160 countries and even county-by-county data in the United States and found what Burke called “the goldilocks zone in global temperature at which humans are good at producing stuff” — an annual temperature of around 13 degrees Celsius or 55.4 degrees Fahrenheit, give or take a degree.