Viruses are Falling from the Sky by the Billions

About 20 years ago, scientists started finding genetically similar viruses in very different environments and different locations around the world. Now they know why. Faith Lapidus explains.
Originally published at - https://www.voanews.com/a/4316115.html


(Source: VOA News, https://www.youtube.com/watch?v=pqNr87YAPmw)