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Prolonged Sitting Linked to Breast and Colon Cancers

WASHINGTON -- Our culture of sitting may be responsible for 173,000 cases of cancer each year, according to new estimates. Physical inactivity is linked to as many as 49,000 cases of breast cancer and 43,000 cases of colon cancer a year in the United States, said Christine Friedenreich, an epidemiologist at Alberta Health Services-Cancer Care in Canada. [More]

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Your Next Credit Card Is Your Last

You may remember when credit card machines weren't so reliable, so stores sometimes used that little aluminum contraption with a roller over your card, and you had to sign the printed copy hard enough to ink onto the carbon paper. This is one of the reasons some cards still have those raised silver numbers on the front alongside your name and expiration date.

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More Efficient Dyed Cells Offer Hope for Cheap Solar Windows

Plants have been using a green pigment for billions of years to capture sunlight, turning it into a flow of electrons and storing its energy in the chemical bonds of big organic molecules (also known as food). Given that successful history, chemist Michael Graetzel of the Swiss Federal Institute of Technology in Lausanne and his colleagues turned to a compound similar in shape and color to chlorophyll when they set out to build a better solar cell.

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7 Start-ups Inspired By Craigslist

Craigslist brought classifieds to the online masses; these fast-growing companies are the niche next-generation of social buying and renting. Location : Brooklyn, New York Founder : Campbell McKellar How it Works : Loosecubes matches people with an extra desk, studio, or office space with independent workers looking for a place to be productive. How it Makes Money : Hosts are charged a 10 percent fee for each transaction

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When ‘happily ever after’ lasts days, not years

Kim Kardashian’s brief 72-day marriage has roused public indignation, but sometimes, women find themselves wanting to end marriages before they’ve hardly begun. When they do, experts say, the situation calls for sensitivity and candor.

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Wet Down: Warm, Wet Conditions on Ancient Mars May Have Been Confined to Subsurface

When Mars orbiters decades ago spotted valleys and other fluvial landforms on the surface of the Red Planet, a tantalizing idea came to the fore. Perhaps, planetary scientists ventured, ancient Mars was blanketed by a thick atmosphere that kept the planet much warmer and wetter than it is now, with flowing water, lakes and maybe even an ocean covering at least part of its surface. And if Mars had water some three billion to four billion years ago, they wondered, why not life?

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New Insulator Could Help Grid Weather Storms

High voltage cables are typically insulated with special water-resistant polymers that have high-dielectric strength. When the cables get whacked by an especially strong rain or snow storm the insulation may not block all of the moisture. The leaks can lead to a loss of electrical current or even damage to the cables.

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