> Their findings, published in the International Society for Microbial Ecology Journal, showed that approximately 800 million viruses may be deposited per squar

> Their findings, published in the International Society for Microbial Ecology Journal, showed that approximately 800 million viruses may be deposited per square meter of land. http://www.iflscience.com/environment/billions-of-viruses-are-raining-down-on-us-from-the-sky-every-day/ http://www.iflscience.com/environment/billions-of-viruses-ar...