Conversely, high-quality AC could actually have been useful to decrease the chance of infection. “There’s nothing inherently wrong with the HVAC system,” says Joseph Allen, assistant professor of exposure assessment science at the Harvard School of Public Health. In fact, HVAC should be leveraged to minimize the risk of airborne transmission, especially if it’s fitted with high-efficiency filters designed to strain pollutant particles out of the air. It’s also potentially better than industrial fans, in workplaces such as meatpacking buildings and factories, which could increase the velocity of large droplets—much higher than in an AC system—carrying them farther in fast jets of air. … [Read more...] about Will air-conditioning help spread the coronavirus?
Wallpaper can be a serious contributor to house fires, since it’s often highly flammable and helps spread flames faster throughout a building. But scientists are experimenting with a new type of wallpaper that isn’t just flame-resistant, but actually detects fires with the help of graphene. Just like your average wallpaper, the stuff can be manufactured in different colors and printed commercially for designers and decorators, but it contains none of the potentially hazardous flame retardant chemicals with which most wallpaper must be treated. … [Read more...] about This Wired Wallpaper Could Turn Your Whole House Into A Fire Alarm