FROST CRACKS

In the United States, a polar vortex is bringing extreme cold. People are talking about trees exploding. But can trees really explode? Trees can crack in extreme cold. This is called a frost crack. The thick sap inside trees freezes at a lower temperature than water. It stays liquid even when it's

Michigan is about to experience some seriously chilly weather. We're talking single-digit highs and wind chills way below zero. Some folks are even talking about trees exploding. But is that really possible? Let's talk about frost cracks. These are long cracks that can go up and down a tree trunk.