It can be dangerous for casual hikers to go onto the glacier or attempt many of the towering mountains in this part of the Chugach.

BBC: Accessible wilderness in Alaska��s largest city

To melt a glacier at an altitude above 6, 000 metres, where many of the Himalayan glaciers are found, requires a lot more warming than can be expected by 2035 a point made forcefully in a letter to Science by Dr Kaser and others, published this week.

ECONOMIST: Glaciers and the IPCC

"But, ' adds Mel Reasoner, Director of the Mountain Research Initiative, "in many arid and semi-arid areas, people are dependent not only on the amount of glacier melt water, but on the timing of the water flow.

UNESCO: 83e