Denver Channel: Colorado State University is getting ready to test a California company’s technology that converts trees killed by bark beetles into fuel for cars. CSU’s Engines and Energy Conversion Lab will measure the power and pollution from the fuel developed by Cobalt Technologies Inc. of Mountain View, Calif. Cobalt’s process turns lodge pole pines into butanol. Ethanol, a more common biofuel, usually uses corn or other food crops. Tom Foust of the National Renewable Energy …