Glaciers, Retreating

THERE ARE GLACIERS in all areas of the globe. Most glaciers are found in the polar regions, but many of the Earth's tallest mountains also have glaciers. Glaciers go through life cycles. They have growing years, moving years, and retreating years. For glaciers to form, very specific climatic conditions are necessary. They are usually found where there is enough snowfall for a snow pack to permanently accumulate, where summers are not warm enough for all of the snow to melt. In some regions, such as at the North Pole, the intense cold squeezes out moisture as rain or snow before it advances to the far north. This makes the Arctic region a cold desert because the cold prevents the accumulation of snow. However, in warmer ...