At least 66 people have died and more than 50 were injured following a horrific fire at a popular ski resort, the Associated ...

But few are fortunate enough to see Kelvin-Helmholtz clouds, which look like a pattern of ocean waves in the sky. Kelvin-Helmholtz clouds, also known as fluctus clouds, is a rare phenomenon that's ...

These formations are not ocean waves, but instead an area of low atmospheric ... Up in the sky, the water in the moist air cools off and condenses into clouds. The process releases heat, further ...