Washington Post: The Western Regional Air Partnership and other environmental groups have succeeded in getting the Environmental Protection Agency to enforce provisions of the Clean Air Act in the Western US. Provided a deal struck between the EPA and the groups passes a judicial review, coal-fired plants in Colorado, Montana, North Dakota, and Wyoming will be required to install devices called scrubbers to reduce their emissions of sulfur dioxide and nitrogen dioxides—or be shut down. Besides being a source of atmospheric pollution, the emissions are responsible for reducing visibility at the Grand Canyon and other national parks.
The finding that the Saturnian moon may host layers of icy slush instead of a global ocean could change how planetary scientists think about other icy moons as well.
Modeling the shapes of tree branches, neurons, and blood vessels is a thorny problem, but researchers have just discovered that much of the math has already been done.
January 29, 2026 12:52 PM
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