When temperatures plunge and the air goes painfully still, people in northern forests sometimes hear a sharp crack that sounds like a gunshot. That eerie noise has fueled a viral claim that trees ...

Add Yahoo as a preferred source to see more of our stories on Google. Ice coats trees in Austin during a past winter freeze. (Andrea Ball/Staff) Many Americans are suddenly concerned about "exploding ...

Sudden or severe cold temperature can cause trees to experience "frost crack." NPR's Scott Simon talks with Bill McNee of the Wisconsin Department of Natural Resources about what happens and why. If a ...