Southern Arizona politicians joined representatives of the Sierra Club by the banks of the Colorado River on Oct. 27 to call on Washington to protect the waterway by taking action against climate change. The officials, including Democratic U.S. Rep.-elect Adelita Grijalva, were demanding an end to what they called major rollbacks in climate protections, most prominently the Trump administration’s plan to overturn the endangerment finding that enables the Environmental Protection Agency to regulate greenhouse gas emissions.

Other climate policy news:

• The Guardian (U.K.): ‘Change course now’: humanity has missed 1.5C climate target, says UN head​
• The National Law Review: California’s cap-and-trade is extended and becomes ‘cap-and-invest’ in package of new energy laws​