Respiratory syncytial virus (RSV) is a highly contagious and seasonal respiratory virus that mainly causes common cold symptoms in healthy adults but can cause more serious lung infections in infants, ...

If you’re lucky enough to live to 80, you’ll take up to a billion breaths in the course of your life, inhaling and exhaling enough air to fill about 50 Goodyear blimps or more. We take about 20,000 ...