Download A World Without Ice by Henry Pollack Ph.D., Al Gore PDF

By Henry Pollack Ph.D., Al Gore

A cowinner of the 2007 Nobel Peace Prize bargains a clear-eyed clarification of the planet's imperiled ice.

a lot has been written approximately worldwide warming, however the an important dating among humans and ice has bought little focus-until now. As one of many world's best specialists on weather swap, Henry Pollack offers an available, complete survey of ice as a strength of nature and the aptitude outcomes as we are facing the opportunity of an international with no ice.

A international with no Ice lines the influence of mountain glaciers on offers of consuming water and agricultural irrigation, in addition to the present result of melting permafrost and shrinking Arctic sea ice-a state of affairs that has degraded the habitat of various animals and sparked a world race for seabed oil and minerals. Catastrophic probabilities loom, together with emerging sea degrees and next flooding of low-lying areas around the globe. A global with no Ice solutions our such a lot pressing questions about this pending hindrance, laying out the required steps for handling the unavoidable and averting the unmanageable.

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The colors of the Antarctic are unlike colors elsewhere. Whereas green is the signature color of well-watered vegetation everywhere, and reds, yellows, and tans paint Earth’s deserts, Antarctica specializes in black, white, and blue. The rock is mostly black and the snow white. Glacial ice is white at the surface, but deep brilliant blue where crevasses and fissures reveal the interior. On a cloudy day, the deep sea is dark, and when the Sun shines brightly, the ocean appears a very deep blue. In brilliant sunshine the sky is a perfect sky blue, and when clouded over, it is a blank sheet of low-hanging gray.

An even greater number of people depend on the seasonal replenishment of water from the melting of winter snow to nourish crops at the outset of the growing season. The dramatic shrinking of Arctic sea ice over the past few decades has already triggered international posturing over oil and minerals that perhaps will be discovered on the ocean floor. And the likely disappearance of summer sea ice later in this century will set the stage for exploitation of the Arctic’s fisheries, and will open maritime trade routes such as the fabled Northwest Passage between Europe and East Asia.

The complexities of the motions of Earth and Venus about the Sun make transits relatively rare events, coming in pairs separated by eight years, but with more than a century separating one pair from the next. After the 1761/1769 pair, the next chances to observe a transit would come in 1874/1882 and 2004/2012. Cook had been selected for this scientific undertaking because of his skills in surveying and charting, honed a decade earlier on the St. Lawrence River, during the Seven Years’ War between Britain and France for control of the territory that would become Canada.

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