KUNC-FM: Kirk Siegler

Cash-strapped states are embracing the millions of dollars in new tax revenue coming from shale oil and gas development. But there aren't enough inspectors to make sure the sites aren't polluting. The problem seems especially apparent in Colorado, which now has more than 47,000 active oil and gas wells but the state employs just 17 inspectors.

The Denver police are asking taxi drivers to help them catch criminals with a new bulletin alert system. In the months since the Taxis on Patrol program started, cabbies have helped police arrest hundreds of criminals, from carjackers to drunken drivers.

Colorado holds its Republican caucuses on Tuesday. Mitt Romney, Rick Santorum and Ron Paul have focused their attention there recently. The state will also be a key battleground in the general election contest. From Denver, Kirk Siegler of member station KUNC reports.

The National Western Stock Show going on this month in the Mile High City is now in its 106th year. The show is considered the marquee event for all things livestock. But every year, thousands of people flock to an old coliseum on the outskirts of town to see a lot more than just cows.