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polar cap |
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polar cap [′pō·lər ‚kap] (astronomy) Any of the bright areas covering the poles of Mars, believed to be composed of frozen carbon dioxide and water-ice. (hydrology) An ice sheet centered at one of the poles of the earth. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Oh sure, we've all heard the stories about hotter summers and never-before-witnessed melting polar caps and so on, chanted mantra-like by modern-day prophets of doom. Braasch, a photographer whose work has appeared in National Geographic, Discover, and Audubon, began documenting the impacts of climate change when he visited the polar caps last year. ``If we discovered that both polar caps are mostly water, it would leave a mystery about why there is so little carbon dioxide on Mars. |
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