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+ - America's Bridges May Be Falling Down Soon

Submitted by cartechboy
cartechboy (2660665) writes "Oh dear. Turns out a recent analysis of data found in the National Bridge Inventory (yes, someone tracks bridge data) suggests we're in for a bit of trouble. The data: Of 607,380 bridges, 65,605 were classified as 'structurally deficient,' and 20,808 as 'fracture critical.' (If just one component on a fracture-critical bridge fails, it puts the bridge at risk of immediate collapse.) What's more, 7,795 bridges had both problems — a situation typically referred to as the 'double whammy.' Here is the translation of all the numbers: 13 percent of bridges in America are failing, and hundreds more will reach that state soon. How much will it take to address this? A mere $3.6 trillion, by the year 2020."
Earth

Scientists Cut Greenland Ice Loss Estimate By Half 414

Posted by samzenpus
from the not-so-bad-after-all dept.
bonch writes "A new study on Greenland's and West Antarctica's rate of ice loss halves the estimate of ice loss. Published in the journal Nature Geoscience, the study takes into account a rebounding of the Earth's crust called glacial isostatic adjustment, a continuing rise of the crust after being smashed under the weight of the Ice Age. 'We have concluded that the Greenland and West Antarctica ice caps are melting at approximately half the speed originally predicted,' said researcher Bert Vermeeersen."

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