Word: poleward
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Dates: during 1940-1949
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...eventually harpooned. This method has already proved that many whales are migrants. They mate and bear their young in tropical waters, usually in fall or winter. During this period they live partly on their fat, for their food is comparatively scarce in the tropics. In spring they move poleward, spend the summer in arctic or antarctic waters. Here the surface swarms with "krill," or free-swimming crustaceans, which they strain out of the water with the whalebone sieves in their mouths. A favorite kind of krill is a large, seagoing shrimp...
...winds are the most reliable part of the planet's basic air movement, which is from the equator toward the poles. On the equator itself are the doldrums, where hot air rising makes little or no breeze. North and south of the doldrums the upper air begins its poleward journey by flowing steadily westward. Then it slowly shifts to become a south wind, shifts again in the temperate zone to become the prevailing westerlies. Far from their equatorial source, winds are made unpredictable by local forces. But the trades, neglected by the Age of Steam, are still blowing their...