"We looked for high quality research that had compared groups of people using fans with groups who didn't use them during a heatwave [sic]. However, we didn't find any research that met our requirements," the researchers wrote. "Some suggested that fans might reduce health problems, while others suggested that the fans might make things worse." The team of researchers concluded that a fan that is not directly aimed at a person in temperatures lower than 95 degrees Fahrenheit may help one cool down. However, they said that a fan propped against a window pumping in outside air above 95 degrees...