Program could create door-to-door energy consultants. It’s time for an in-your-face approach to reducing greenhouse gas emissions, the Boulder City Council decided Thursday night. The council unanimously approved increasing the city’s voter-approved carbon tax from its minimum to its maximum level beginning Aug. 6, providing an additional $810,000 annually toward meeting the city’s carbon-cutting goals. The tax, built into utility bills, is expected to help the city reach 95 percent of the Kyoto Protocol — which calls for reducing greenhouse gas emissions 7 percent below 1990 levels — before the tax ends in 2013. Kara Mertz, an environmental affairs manager...