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171. In 1527 King Henry VIII sought to have his marriage to Queen Catherine annulled so that he could marry Anne Boleyn.

172. The energy source on Voyager 2 is not a nuclear reactor, in which atoms are actively broken apart, but rather a kind of nuclear battery that uses natural radioactive decay to produce power.

173. Joan of Arc, a young Frenchwoman who claimed to be divinely inspired, turned the tide of English victories in her country by liberating the city of Orleans and persuaded Charles VII of France to claim his throne.

174. A letter by Mark Twain, written in the same year that The Adventures of Huckleberry Finn was published, reveals that Twain provided financial assistance to one of the first Black students at Yale Law School.

175. Two new studies indicate that many people become obese more because their bodies bum calories too slowly than because they eat too much.

176. As a result of the ground-breaking work of Barbara McClintock, many scientists now believe that all of the information encoded in the 50,000 to 100,000 different genes found in a human cell is contained in a mere three percent of the cell&aposs DNA.

177. So poorly educated and trained are many young recruits to the United States work force that many business executives fear this country will lose its economic preeminence.

178. In the last few years, the number of convicted criminals given community service sentences allowing them to remain unconfined while performing specific jobs that benit the public has risen dramatically.

179. During the early years of European settlement on a continent that was viewed as "wilderness" by the newcomers. Native Americans, with their intimate knowledge of the ecology of the land, helped to rescue many Pilgrims and pioneers from hardship, or even death.

180. Quasars are so distant that their light has taken billions of years to reach the Earth; consequently, we see them as they were during the formation of the universe.