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Three of the warmest years of the 20th century were bunched in the 1990s. Does this reflect a long-term warming of the globe by carbon dioxide and other greenhouse gases, as many atmospheric scientists have contended? Or was the hot spell just a random, unexceptional fluctuation in the weather? A study published last week in Nature magazine by climatologist Michael Mann and colleagues from the University of Massachusetts, Amherst, may help melt away any lingering doubt about global warming. The scientists developed what amounts to a time-traveling thermometer. Applying innovative statistical tools to reams of evidence gathered from...
Hunting down the genes that influence personality remains a dauntingly difficult business. Although DNA is constructed out of a mere four chemicals--adenine, guanine, cytosine, thymine--it can take as many as a million combinations to spell out a single human gene. Most of these genes vary from individual to individual by only one chemical letter in a thousand, and it is precisely these minute differences that Hamer and his colleagues are trying to identify. Of particular interest are variations that may affect the operation of such brain chemicals as dopamine and serotonin, which are well-known modulators of mood...
...does Joe Walsh spell relief? How about Marcucci, Schaefer, Lennon and Vail...
...effectively to last nearly 25 years. Despite his readmission to office in 1917, after a spell commanding an infantry battalion on the Western Front, he failed to re-establish the reputation as a future national statesman he had won before the war. Dispirited, he chose the issue of the Liberal Party's support for the first government formed by the Labour Party in 1924 to rejoin the Conservatives, after a spell when he had been out of Parliament altogether. The Conservative Prime Minister appointed Churchill Chancellor of the Exchequer, but when he returned the country to the gold standard...
Kristen Boike could spell Kowal next year. Before ankle surgery ended her season, Carrie Larkworthy brought back memories of a young Jessica Gelman '97, Harvard's all-time assists leader. And Jill Zitnik might be the best pure shooting talent Harvard has seen since Erin Maher `93-Zitnik converted 11 of 14 three-pointers for a .786 percentage from down-town...