Neuroscientists have long assumed that neurons are greedy, hungry units that demand more energy when they become more active, and the circulatory system complies by providing as much blood as they require to fuel their activity.
The cold and flu season of 2022 has begun with a vengeance. Viruses that have been unusually scarce over the past three years are reappearing at remarkably high levels, sparking a “tripledemic” of COVID-19, the flu and respiratory syncytial virus, or RSV.
Every time you flush a toilet, it releases plumes of tiny water droplets into the air around you. These droplets, called aerosol plumes, can spread pathogens from human waste and expose people in public restrooms to contagious diseases.
Authorities recommend control measures, but they are “voluntary”. They include wearing a mask, vaccination, testing if you have symptoms and staying home if you test positive, and ventilation. Ventilation is often the last measure listed – as if it’s an afterthought.