..? Is Japan and Korea tropical for the British?
The BBC seems to love to ram in a climate change narrative in every possible hole it can find. While it's a serious problem, trying to fit it into every story just starts to make me skeptical of every climate change related things they report
It probably has a lot less to do with air temperature and more to do with amount of precipitation and humidity. You also don't have bamboo growing in Europe or the Mediterranean. It's not because it's not hot enough in Italy or Egypt
Just look at some other BBC article and they explain there is a impending water shortage in Britain.