A Colorado Springs firm uses mapping to determine where missionaries can best do their work, and data to help Evangelicals spread their message. Then, how the city of Aspen transitioned to 100 percent renewable energy. Plus, with a new book, the poetry of Belle Turnbull gets new life. Turnbull and her lesbian partner lived in Breckenridge in the first part of the 20th century, where the poet’s work focused on the mountains and mining. Also, Fort Collins band Head for the Hills offers “post-modern” bluegrass on its new album, “Potions and Poisons.”