Rare clouds which have historically been blamed for a number of UFO sightings have been seen over northern skies in the UK. The special cloud formation got its nickname from the smooth ...

BBC Weather Watchers have been treated this week to red skies at night in the mornings - and unusual cloud formations. Lenticular clouds could be seen widely across Scotland over the past few days.

Usually, clouds trap some of this heat and send it back to the ground. But as the climate warms, there are fewer low clouds in some areas, which means less heat is returned to the surface.