Some of the fastest-changing neighborhoods in Denver are along I-70 north of downtown, in part because of a major overhaul planned for the National Western Stock Show complex. The former agriculture secretary under President Obama, Tom Vilsack, is helping shape what's coming. Also in North Denver, a high school podcast focuses on neighborhood pollution. Then, Colorado was one of the first states in the country to make student improvement a main factor in evaluating educators' job performance, but it's not clear whether those reviews are actually helpful. Also unclear is what impact those evaluations will have on the gubernatorial hopes of the politician who created them. And, an engineering feat -- creating a suit that would allow a man to freefall from the edge of space --and land safely with a parachute.