LifeTwo Miraculous Surgeries of 1893: A Successful Human Heart Operation and Removing a President’s Tumor In July 1893, two medical surgeries of remarkable, historical significance occurred. More than a century later, they are as fascinating as ever... 2021.02.11Life
LifeOnline tool calculates COVID-19 transmission risk in poorly-ventilated spaces Ventilation plays a vital role in the spread of COVID-19, an... 2020.01.04Life