英国去年冬季打了12場颱風,大風大雨大雪( 負 22 degree C)

為何雨水被大風迫入中世紀哥德式建築的間隙后結冰膨脹但無構成危險古建築? 

参考 http://www.bbc.co.uk/programmes/p022fys2

What's Wrong with our Weather? Dr Helen Czerski and meteorologist John Hammond make sense of our recent extreme weather.