Daily Camera: Even though large vehicles represent only 5 percent of the vehicles on the road, they cause about 20 percent of the transportation sector's pollution, the authors write. (Kira Horvath / Staff Photographer)
The hottest spring in history is now officially over, and so far this summer Colorado continues to experience record high temperatures, causing wildfires across the state. These fires aren't the only evidence of the warming planet -- already Colorado has faced air quality alerts with increased...