Courtesy of Chris Richards/University of Arizona
Tropical Forests Are More Resilient Than We Thought, Which Means We Could Save Them

Tucson's BioDome2 is showing researchers that the rainforest can handle rising temperatures better than initially thought.

Hope O’Brien/Cronkite News
Arizona Could See Carbon-Free Energy by 2050

The Arizona Corporation Commission on passed a proposal requiring utilities to be 100% free of carbon emissions by 2050 and meet particular benchmarks along the way.

A home in the Lakeview Senior homes area, with solar panels onthe roof, in Sun City, Arizona on Thursday, June 20, 2013. As the solar power industry skirmishes with utilities over the growth of the home solar panel business, it is enlisting a new political ally: Tea Party activists and other conservative voters. Renewable energy firms have traditionally sought help from the political left by touting the environmental benefits of greener power. But as the industry grows outside of California in (Photo by Sandy Huffaker/Corbis via Getty Images)
Major Changes Could Be on the Horizon for Renewable Energy in Arizona

One upcoming decision the Corporation Commission will face is a bipartisan proposal that would require utilities to be 100% carbon-free by 2050.