Word: winded
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...Energy a Breeze? I thought I had come to a typo in your article "Got Wind?" when I read about the Michigander who spent $16,000 to get a wind turbine that "can generate 1.5 kilowatts ... enough to power the average lightbulb for 15 hours" [Dec. 1]. And that, he admits, is on a day with "decent wind." A few nuclear plants can power more lightbulbs than that, and you don't have to sit around waiting for a breeze. Americans need to look at how France is getting nearly 80% of its electricity. Stephanie Gutmann, Piermont, New York...
...helps that global investment in renewable energy was up 60% last year. The number of projects using geothermal power has lagged behind wind, solar and biofuels for many years. However, since 2004, projects in the U.S. have doubled, and countries such as Indonesia have set ambitious goals for geothermal generation. The financial crisis has hit the renewables sector, to be sure, but analysts say that thanks to U.S. President-elect Barack Obama's green-energy agenda, and recent G-8 goals to cut carbon emissions by 50% by 2050, the industry will come back strong. "I have people calling...
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...
...thought I had come to a typo in your article "Got Wind?" when I read about the Michigander who spent $16,000 to get a wind turbine that "can generate 1.5 kilowatts ... enough to power the average lightbulb for 15 hours" [Dec. 1]. And that, he admits, is on a day with "decent wind." A few nuclear plants can power more lightbulbs than that, and you don't have to sit around waiting for a breeze. Americans need to look at how France is getting nearly 80% of its electricity. Stephanie Gutmann, PIERMONT...
There's a sexy side to green technology. Have you heard of solar panels that use nanotechnology? Algae that can be raised to make carbon-neutral biofuel? How about devices that generate power from the motion of the ocean, or even backpack wind turbines - O.K., maybe...