When it comes to heat stroke and saving people's lives, the Phoenix Fire Department and Valleywise Health know you need to get people cool quick. A new heat stroke treatment they are implementing called "cold water immersion" can cool patients up to five times faster and save lives as temperatures continue to rise. Learn more in this report from Ben Tracy for Climate Central . Full video on our youtube channel #heatstroke #heatwave #climatechange #climate | Climate Central