"Breaking Point: Scientists Discover the Human Body's Heat Limit"
Scientists have determined that the maximum mix of heat and humidity a human body can survive is around 35 degrees Celsius (95 Fahrenheit) with 100 percent humidity, known as the "wet bulb temperature." At this point, sweat no longer evaporates off the skin, leading to heatstroke and organ failure. While this limit has been breached only a few times, extreme heat at lower levels can still be deadly. As global temperatures rise, dangerous wet bulb events are expected to become more common. Vulnerable populations, such as children, the elderly, and outdoor workers, are at higher risk. Climate change is a significant factor in the increase of wet bulb temperatures.