Unless you've been living in an extremely well-insulated cave, you know it's insanely cold across the country.

It's so cold you can turn boiling water into snow in the time it takes to read this sentence.

Eric Holthaus is a meteorologist who took a pot of boiling water outside in Viroqua, Wisconsin when it was -21 degrees, with a wind chill so severe that it felt like 51-below.

Watch what happens when Holthaus tosses the water into the air. It's instant snow and proof that Mother Nature is one cold-hearted woman.