Here are 10 interesting facts about glaciers:

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  1. Alaska is estimated to have more than 100,000 glaciers. Most remain unnamed.
  2. A single glacier ice crystal can grow to be as large as a baseball.
  3. Mountain valleys are typically ?V? shaped before being taken oven by a glacier; during glaciation, the valley widens and deepens and thus becomes ?U? shaped.
  4. On steep slopes, a glacier can be as thin as 50 feet.
  5. Though it sits on the equator, Mount Kilimanjaro is glaciated.
  6. The Antarctic ice sheet is actually a glacier and has existed for at least 40 million years. If it were to melt in its entirety, sea levels would rise 210 feet worldwide, according to the U.S. Geological Service.
  7. A glacier can range in length from the equivalent of a football field to more than 100 miles.
  8. Glaciers are found in 47 countries.
  9. Glacier ice is the largest reservoir of fresh water on the planet, storing an estimated 75 percent of the world?s supply.
  10. Approximately 10 percent of the Earth is covered by glaciers; during the last Ice Age, they covered one-third of the Earth?s surface.