by Adair Locke, MD. 1  Methylene blue is administered intravenously by anesthesia providers for a variety of clinical uses and may be used with increasing frequency as an intraoperative urologic marker dye due to an indefinite nationwide shortage of indigo carmine.
Hot, humid summer days can feel unbearable sometimes. Humidity, or the amount of moisture in the air, can make the temperature feel warmer, as our sweat is slower to evaporate. Not only is the muggy air uncomfortable, but it can cause our bodies to overheat, exhaust easily, and poses a potential danger to our health.
Temperature also affects density altitude. When you heat the air, the air molecules have more energy. And, when they have more energy, they spread farther apart. When the air is warmer than standard, it's less dense and performance decreases.