Officials in Las Vegas say they are surprised at the response to this year's lawnmower trade-in program, with 1,000 discounted electric mowers being claimed in just two weeks. "We had no idea that the response would be so overwhelming, but our residents were very receptive to trading in their gas-powered mowers for nonpolluting electric mowers, and they responded quickly," said Tina Gingras, assistant director for the county Department of Air Quality and Environmental Management.

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