Word: impaction
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Sadowsky and his fellow researchers have found a way to tease out stretches of marker DNA that indicate whether the bacteria came from human or nonhuman sources. With cities and states across the country spending billions on new water-quality systems, the impact of Sadowsky's work could be huge...
...Meltdown Begun?" [Feb. 27] reported the discovery that Greenland's glaciers are melting faster than anyone expected. That is more proof of global warming, and the resulting rise in sea levels makes the immediate impact of climate change worse than anticipated. The glaciers are also receding at Glacier National Park, Mont. We are having milder winters in the Midwest, and tropical frog species are disappearing. What more evidence does anybody need...
Even if H5N1 remains a problem mostly among birds, however, the virus could have a devastating economic impact on Chisholm and many other farmers and the businesses that depend on them. Poultry sales have already plummeted across Asia and Europe. Overall, U.S. exports of broiler chickens were down 30% in December 2005 compared with the prior year. The greatest danger, however, may be in Africa, where the income, not to mention the food, that chickens provide can mean the difference between life and death...
...basic principle of the new model is to get the driver farther away from points of impact. So engineers have made it wider and and taller, creating what the drivers call a bigger greenhouse. That could be important when the car, say, rolls onto its roof. The driver's seat has been moved 4 in. to the center, which is supposed to achieve two things: it lets NASCAR reinforce the driver's side with energy-absorbing, staggered steel plates and gives the driver more comfort. Over the years, as NASCAR began adding such safety devices as the HANS head...
What's key is that the wider car addresses what Pemberton calls G-force spikes, known to the rest of us as the crash. "It's the amount of energy absorbed over time," he explains. The farther the driver is from the impact, the more time the energy has to dissipate. To help it along, NASCAR has added front and rear crumple zones. It is also studying the addition of more crash protection for the right front, the most frequent collision point...