So Leonhardt and Pendry imagined bending space to steer light around a circular region, making anything inside that hole invisible.

因此，莱昂·哈特和彭迪设想，通过弯曲空间来引导光绕过圆环，从而使位于圆环中的所有东西都隐身。

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He calls it "cow power to horsepower." Leonhardt says the challenge is to cost-effectively remove impurities from the manure-derived methane.

VOA: standard.2010.02.23

(Speaking) At present, the average price of gasoline in the United States is well below Leonhardt's barely-competitive threshold of about 75-cents per liter.

VOA: standard.2010.02.23

(Speaking) Institute director Eric Leonhardt says he's had his eye on the dairy herd as a source of transportation fuel for a long time.

VOA: standard.2010.02.23

Leonhardt thinks Toyota's new Prius is a good first step toward using renewable energy.

CNN: Solar cars still a way off

After all, as Leonhardt points out, many top business school graduates start their careers with large consulting firms.

FORBES: From Problem Solver to President: What It Takes for a Consultant to Become a Leader

Leonhardt will be the MC at the sold-out Silicon Valley Crowdfunding conference in Palo Alto tomorrow and Friday.

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