Colorado

I-70 is the only major interstate highway that runs over the continental divide in Colorado. Earlier this summer, it was closed for two weeks following the Grizzly Creek Fire in Glenwood Canyon. It’s just one example of emerging transportation challenges linked to climate disruption.

Most dog owners don’t think to pick up after their pets when out hiking in the backcountry, assuming it’s no big deal. But all that dog poop adds up to potential harm by introducing foreign bacteria and nutrients to forests, fields and streams.

Leaks of methane from gas and oil wells are a major source of climate pollution but it’s tough to detect the odorless and colorless gas. Now, a new competition is spurring inventors to come up with cheaper and more effective methane detectors. The World’s Jason Margolis profiles two of the inventors.

Residents in Pueblo, Colorado are engaged in a fight with their utility company, tired of paying among the highest electricity rates in the state. The city is looking into becoming its own utility — one powered by 100 percent renewable energy — a noble goal to lower rates and combat climate change.