New York Times: Created by Congress in 1937, the Bonneville Power Administration (BPA) operates all the federally owned hydroelectric plants in the Pacific Northwest. During strong storms earlier this year, the BPA faced a glut of power from its plants and from wind turbines that are connected to its grid. Sending water around the dams and into spillways would have reduced the plants’ power output, but it would also have exposed salmon to harmful levels of dissolved nitrogen. The BPA chose instead to turn off the wind turbines, whose operators lost money and federal tax credits as a result. According to a ruling issued on Tuesday by the Federal Energy Regulatory Commission, the BPA’s decision was wrong. The BPA, said the the commission, should have kept the turbines running and instead paid its customers to take the excess power.
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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