BrainStuff Classics: What Is Red Snow?

Snow usually appears white, but it can come in a few other colors -- and in the case of red snow, that vibrant color may be a warning from Mother Nature. Learn why in this classic episode of BrainStuff, based on this article: https://science.howstuffworks.com/nature/climate-weather/atmospheric/amazing-and-alarming-science-behind-red-snow.htm