TAKAHASHI, Okayama Prefecture--A university lab is providing artificial intelligence-based probabilities on whether a sea of clouds will form around the “mountain castle in the sky” here.

Kelvin Helmholtz clouds are named after the two scientists who studied the physics behind them A rare cloud formation resembling waves in the sky has been seen across North Yorkshire. The billowy ...

A mansion in the North Carolina mountains has sold for a record price, according to Premier Sotheby’s International Realty. The 7.6-acre “castle in the clouds” estate in Banner Elk went for ...