Posts Tagged ‘positive externality’

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    The Crawler

    Jun 1, 11 • 260 Views • No Comments

    The fuel economy window sticker for this vehicle would say 1 gallon per 32 feet. Called the crawler, it travels on a roadway 3.5 miles long, could carry 18 million pounds, and moves no faster than 2 mph. The crawler takes the space shuttle to its launchpad....  [read more]

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    Smog-Eaters

    Mar 2, 11 • 378 Views • No Comments

    What if someone had invented “smog-eating” concrete roof tiles? And, what if these tiles consumed enough smog to offset one car’s nitrous oxide emissions during one year (10,800 miles of driving)? Telling us that a firm in California has...  [read more]

  • Uncertainty can slow economic growth.

    Watson Wins

    Feb 18, 11 • 263 Views • No Comments

    Playing against Jeopardy champs Ken Jennings and Brad Rutter, Watson, the IBM computer won. Imagine three podiums. One is labeled Ken, the middle one Watson, and the third one, Brad. IBM assured everyone that Watson had no internet access and all three...  [read more]

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    Grandma and the City

    Jan 31, 11 • 244 Views • No Comments

    In the U.S. 81% of us live in a city. Saying that cities generate more wealth, productivity and innovation, Brookings’ Research Director Alan Berube and Harvard’s Edward Glaeser applaud urbanization. In China, though, Grandma might not be so...  [read more]

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    Environmental Dilemmas

    Nov 2, 10 • 241 Views • No Comments

    It’s the same question. Economic development or conservation? During April, the headline said, “Uganda Seeks to Reconcile Oil-Nature.” Now, in Tanzania, “Proposed Serengeti Highway Is Lined With Prospects and Fears.” The places...  [read more]