Everybody's got a gimmick, it seems, and you might just dismiss this as another one. But Clean Air Lawn Care really does seem to care, in all-electric spades: The Fort Collins-based company, which boasts franchises in Denver, Boulder and across the nation, sticks to the plan by using low-emission equipment, including electric mowers and gardening gadgets, as well as biodiesel trucks fitted with mobile solar panels for recharging equipment in the field. And to compensate for emissions it can't help, the service goes the extra mile by purchasing carbon offsets from partner company Juice Energy. What goes around comes around.