On the rocky slopes high above lush pine forests and mountain lakes, a group of researchers have just finished setting up ...

Alan O'Connor on Aonach Eagach Ridge, Glen Coe, during a cloud inversion. The phenomenon takes place when the temperature is warmer higher up - such as on a hill or mountain - than it is down at ...

Clouds that brought to mind UFOs and other sci-fi scenes hovered over the Coachella Valley on Monday. Here's why.