A study released Thursday found that it's unlikely consumers would be affected by putting an end to Colorado's severance tax for oil and gas companies, reports Christopher Sanchez. The Sonoran Institute, a conservation group, countered claims made by oil and gas companies that ending the 30-year tax break would raise prices in Colorado. The study stated that Colorado produced 23 million barrels of oil in 2007 - "slightly more" than the amount the U.S. consumes in one day, not enough to affect prices. read more ...