The study included data on about half of all Andean glaciers and blamed the melting on an average temperature rise of 0.7C from 1950-1994.

BBC: Massive melting of Andes glaciers

But the report warned that just a one-degree centigrade rise in average temperature would reduce this to 500 viable slopes, and that this was likely to happen between 2020-2025.

BBC: Will this become an increasingly rare sight?

And, most immediate to personal comfort, should the average indoor temperature of British houses continue to rise, stay roughly the same at 17.5C (63.5F), or fall?

BBC: How warm is your home?