"President Donald Trump on Friday threatened to impose tariffs on Canada in retaliation for wildfire smoke, but it was not clear that he has the legal authority to impose such a levy."

"For decades, fishers, swimmers and environmental groups have complained that mud and silt from dredging operations in the Mobile Bay shipping channel have been smothering seagrasses, choking out oysters and clouding water that was once pristine." "A measure to permanently ban the practice of “thin-layer disposal” of dredged sediment nationwide has advanced through a House committee with bipartisan support."

"After a nearly two-year inquiry, Colorado’s Energy and Carbon Management Commission (ECMC) approved deals allowing firms owned by its largest oil and gas companies to avoid the majority of assessed penalties for falsified data submitted by their contractors."

"In a case that has become a local flashpoint, environmental groups seeking to halt a lithium operation in Imperial County until it gets further review argued before a state appeals court in San Diego on Thursday."

"The contamination of a Cheyenne water system by a Meta data center underscores the worries residents have about more than two-dozen data centers that are and could be consuming Wyoming’s energy, water and landscape."

"The state will tax data center electricity but plans to reduce emissions at the facilities and secure environmental protections went nowhere."