[aerohead]

1) On July 8, 2003, Dhahran, Saudi Arabia reported a heat-index of 178-F.
2) Dry-bulb temp, was 108-F.
3) Dew Point was 95-F.
4) It was not an 'official' temperature.
5) My CARRIER psychrometric chart did not go 'high' enough to allow the 'calculation.'
6) I found an online NOAA heat-index calculator.
7) Plugging in the reported dry-bulb and dew-point temps generated 178-F heat index.
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8) With a 1-C increase in near-surface temperature, the atmosphere carries an extra 7% water vapor.
9) This water vapor increases the 'Enthalpy' ( amount of heat energy stored per unit mass ) of the air.
10) At some point, the air is 'saturated' with water vapor, 'evaporative-coolers, cooling-towers, and the human body can no longer reject heat to the environment.
11) 2,500 El Salvadorean sugar cane cutters have already dropped dead from heat death in the field, ultimately from renal failure, as it's impossible to remain hydrated, plus work.
12) As there's no public education, at least in the United States, very few people actually comprehend the threat an increasingly heated planet poses.