Canary in the coal mine – the cryosphere

The planet’s ”canary in the coal mine” is showing disturbing symptoms and we have only years, not decades, to save it. The cryosphere – the regions of our Earth covered by snow and ice – has long been considered the “canary in the coal mine” for global warming. We already knew things were bad. We now know the future of snow and ice on our planet is actually much worse.
Jonas Gahr Stoere, Norway’s Foreign Minister. The Age, Australia 14 Dec 2009