It rarely snows when the temperature drops below zero degrees Fahrenheit (-18 degrees Celsius). But snow does sometimes fall even when it’s that cold. Snow can fall even in the coldest place on Earth, Antarctica, at temperatures well below zero. It turns out that moisture is more important than temperature.
Researchers at the Texas Department of Highways in Fort Worth determined the cow population of the U.S. burps some 50 million tons of valuable hydrocarbons into the atmosphere each year. The accumulated burps of ten average cows could keep a small house adequately heated and its stove operating for a year.