The costs of going green can be "minimal to non-existent if a sustainability policy is carefully thought out and cleverly implemented," Kaestner says.

成本在变绿之后就变得很少了，如果一个可持续性的政策是经过深思熟虑，并巧妙地实施了，就几乎可以忽略成本了。Kaestner说。

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Robert Kaestner is an economics professor at the University of Illinois in Chicago.

VOA: special.2010.03.04

Lisa Kaestner, an American in Tbilisi, said some of her friends fled to Armenia.

CNN: War puts Georgian civilians on edge

Kaestner said the family is trying to make life seem as normal as possible for their children.

CNN: War puts Georgian civilians on edge

Henry Kaestner, cofounder of Bandwidth.com, which works with companies like Skype to place calls, is joining the Christian investing movement.

FORBES: Christian Investors Get Patient With Their Capital