As an igloo settles in the snow, it compresses slightly and loses ... of heat trapped and prevented structural melting. If the house became too cold, they could plug the chimney with moss or ...

The answer is of course, an igloo! 'Igloo' is an Inuit word for 'snow house', and 'Inuit' is the word that describes the people who live in the frozen lands of northern Canada, Alaska and Greenland.

The Iglu-Dorf hotel chain can give you a feel for it – because it runs five igloo holiday ‘villages’ in the Alps made entirely of snow and ice that are rebuilt every year. Temperatures ...