Wyoming's Barrasso is undermining the treaty, while New Mexico's Udall flew to Paris to support it.
An interdisciplinary climate study takes students deep into the Wind River Mountains to research the impact of melting glaciers.
As major coal-producing regions in our respective countries, Wyoming and Shanxi are in a very similar position.
Coal supporters pleaded with feds to not increase the cost of mining as the Interior Department considers updating coal leasing and royalty programs.
Losses continue to mount among Powder River Basin coal producers, signaling a potential shakeup in an industry that supports some 17,000 jobs in the state.