Word: mins
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...filled out the census short form, and--though I don't want to boast--I finished it in 3 min. flat. The reduction-in-paperwork instructions said it would take 10 min. for an average person to complete. How did the Census Bureau calculate its estimate...
...Kelly compared the results from the three test groups--about 40 forms in all--and found them almost identical to the equations she had worked out by adjusting her 1990 estimates for the fewer number of questions on the 2000 questionnaires. That's how she arrived at the 10-min. figure...
...almost any standard, the best yardstick for measuring how steadily--if slowly--athletic performance has improved is the mile run. In 1900 the record for the mile was a comparatively sleepy 4 min. 12 sec. It wasn't until 1954 that Roger Bannister of Britain cracked the 4-min. mark, coming in six-tenths of a second under the charmed figure. In the half-century since, uncounted thousands of mile heats have been run, yet less than 17 additional seconds have been shaved off Bannister's record--about a third of a second per year...
...credit for the improvement goes mostly to better training and equipment, but shoes and diet can get only so good before they--and the runners--hit a wall. "It's conceivable the record could be 3 min. 30 sec. in 50 years," says American Olympic miler Steve Holman. "But bringing it down much more is a long way off." Scientists agree. In 1987 researchers at Canada's McGill University developed a mathematical model that predicted a world mile record of precisely 3 min...
Muscles process oxygen through cellular components known as the mitochondria. Human mitochondria take up only about 3% of the space in a cell. But in animals that run the fastest, mitochondria are far bigger; the mitochondria of an antelope--an animal that easily runs a 2-min. mile and does so in wispy mountain air 7,000 ft. up--are three times larger than ours. "If you could genetically engineer humans to have more mitochondria, bigger hearts and more blood vessels," says Weyand, "we might run about 40 m.p.h...