Main Street, Greensburg, Kansas, nearly four years after the tornado. "The town is a living green science museum," says Greensburg GreenTown cofounder Daniel Wallach. "It's not theoretical; it's something people can tough, feel, and see in action." Search “kansas” from Daniel Wallach of GreenTown

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Main Street, Greensburg, Kansas, nearly four years after the tornado. "The town is a living green science museum," says Greensburg GreenTown cofounder Daniel Wallach. "It's not theoretical; it's something people can tough, feel, and see in action."