When you picture Spain, you probably think of sun, sea and sangria.

Yet up in the Pyrenees mountains, glaciers 100,000 years old tower over the small Spanish towns.

But now, as the ice gives way to climate change, will they be around for much longer?

And are the glaciers of the Alps also at risk of disappearing?

Science Correspondent Martin Stew tells Julie Etchingham What You Ned to Know...