Warm temperatures and tropical climates may really help reduce the spread of COVID-19, a new study suggests. The study found that places with warm temperatures and long hours of sunlight — such as countries close to the equator and those experiencing summer — had a lower rate of COVID-19 cases, compared with countries farther away from the equator and those experiencing colder weather. The findings held even after the researchers took into account other factors that could affect both the spread of COVID-19 and the number of reported cases, such as a country's level of urbanization and the intensity of...