Word: polarity
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...transition to the use of renewable energy sources even if this transition should last a hundred years or more." The U.N. experts believe that today's high oil prices will encourage exploration in remote, previously uneconomic but potentially promising areas such as the deep ocean bed and the polar icecaps...
Heated tropical air rises and flows from the equator toward the colder polar regions, while cold polar air flows toward the equator. The planet's eastward rotation skews the movement of air and causes the prevailing westerly winds that blow from North America toward Europe, and roar across the southern oceans. Topographical features, such as land masses and mountains, and uneven heating patterns further alter the air flow. The result is the assortment of high-and low-pressure regions and the winds that give the earth its weather...
CODDLE YOURSELF. Frostbite, associated in the popular mind with polar explorers and Everest ascenders, is a real and insidious danger whenever it is freezing outside. Just ten minutes of exposure can injure ears, cheeks, tips of noses and ungloved fingers. Smoking increases the risk, since nicotine constricts blood vessels, hastening the cooling process. Nor should one drink alcohol before venturing outside. Booze opens up the blood vessels and accelerates heat loss from the body...
...ancient mariners, polar residents and all other serious outdoorsmen know well, simply heaping on clothes brings on the sweats-and the sweat can swiftly freeze. The best bottom-line investment (for about $18) is a thermal -meaning it traps the air-underwear with an inner lining of moisture-absorbent cotton topped with wool, cotton and nylon. On top the urban survivor wears a flannel shirt, a cashmere sweater or a goose-down vest, a tweed jacket, a muffler, mittens (which allow fingers to warm each other) and a heavy overcoat. On the assumption that the 8:30 a.m. train...
Their finding: the timing of each of the planet's major ice ages was closely related to changes in the earth's attitude and orbit that reduced the amount of summer sunlight striking the polar caps. Unless man somehow unbalances the equation, these scientists concluded, the trend over the next 20,000 years will be toward a cooler global climate and the spread of glaciers in the Northern Hemisphere...