Word: fractionating
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...reduce the risk of cervical cancer, all women should get a Pap smear annually, starting at 18 or whenever they first have sex. (More than 90% of cervical cancers are caused by a common virus that is sexually transmitted, although only a fraction of infected women develop the malignancy.) If you have normal tests three years in a row, you may, at your doctor's discretion, begin having them less frequently. But don't be fooled into thinking you no longer need a Pap smear after menopause. As long as you have a cervix, you need to get tested...
...torn into it, threatening an environmental disaster if all 400,000 gallons of oil within leaked. The daring "controlled burn" was intended to consume 90% of the fuel in 24 hours. The maneuver seemed to work: the burning boat broke in two the next day, but only a fraction of the oil contaminated the beaches...
Time to kick back, call a few friends and get ready for Felicity, right? Not even close. Next Molly pulls out her math assignment: more than 100 fraction and long-division problems. Once she slogs through those, Molly labels all the countries and bodies of water on a map of the Middle East. And she's not through yet: she then reviews a semester's worth of science, including the ins and outs of the circulatory system...
...Teletubbies all the time: A kid's dream. A parent's nightmare. But by year's end it will be a reality for the tiny fraction of Americans who have access to high-definition digital television (HDTV). PBS will use the new medium to bring viewers a channel with round-the-clock programming for young children. "Barney and Friends" and the ubiquitous "Teletubbies" will be part of the lineup when PBS Kids Channel launches September 1. It may eventually include some educational programming like nature shows, since great photography makes better use of the high-resolution technology than does purple...
There is lots of zip in DNA-based biology today. With each passing year it incorporates an ever increasing fraction of the life sciences, ranging from single-cell organisms, like bacteria and yeast, to the complexities of the human brain. All this wonderful biological frenzy was unimaginable when I first entered the world of genetics. In 1948, biology was an all too descriptive discipline near the bottom of science's totem pole, with physics at its top. By then Einstein's turn-of-the-century ideas about the interconversion of matter and energy had been transformed into the powers...