Climate change is real and it is occurring faster than originally predicted. In this video series, scientists explain how climate change is affecting the state of Colorado, while citizens share stories and solutions. One of the more recent videos features an interview with University of Colorado Boulder Professor Emeritus Al Bartlett on the "arithmetic of growth". A set of problem-based model lessons were developed by teams of middle and high school teachers with CU-Boulder scientists and science educators. Also available are the Colorado Science Standards for Climate and Energy.