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...name when it was slathered over Western cities in the 1960s, but newfangled, bright - and still relatively expensive - concrete that has come onto the market this decade. High-performance or ultra-high-performance concrete, as it's known in the industry, is up to 10 times stronger than regular concrete. Although, pound-by-pound, it costs several times as much as regular concrete, industry officials say price comparisons are misleading because the high-tech versions have different properties that make them more comparable to materials such as stainless steel or aluminum - which are often more expensive still. The latest concretes...
...firm Lafarge, director Pascal Casanova waxes lyrical about Ductal, a super-resilient product the center has developed that he calls the "Formula One" of concrete. It's what architect Ferrier intends to use in his 807-ft. (246 m) Hypergreen tower, a project that could not be built with regular concrete...
Stronger concrete translates into significant gains for the environment because it can be used more thinly, consuming considerably fewer raw materials than regular concrete. Moreover, concrete has some properties that make it intrinsically energy-efficient when used in buildings. It insulates well because it doesn't let in wind and water. Its density also means it stores heat during the day and releases it at night, enabling savings on air conditioning and heating; architects including Ferrier are playing with such possibilities as they design their new buildings. And the ultra-high-performance concretes can be put to surprising uses...
...started putting responsibility back into the hands of the individual when it comes to our health. We've gotten into the habit of being reactive instead of proactive, living unhealthy lifestyles and relying on medicine to cure all our ailments. Emphasizing prevention through healthy eating, physical activity and regular checkups is the best approach to take if the U.S. wants to truly fix its health crisis. Sarah Grafelman, KIRKSVILLE...
...Republican Party. But its emotional heart is a portrait of what might be called Huckabee's America, a place where long-haul truckers lead campaign rallies, Chuck Norris is a political kingmaker and everyone shops at Sam's Club. Huckabee still predicts a populist revolution in which regular, God-fearing people will take Washington by storm. In the meantime, he is searching for his "angel with a ring." He wants to give it back...