Wall Street Journal: A massive $21 billion plutonium-reprocessing plant that has been in the works since 1992 is finally nearing completion, according to Japanese officials. Once up and running, the plant at Rokkasho in northern Japan will be capable of producing 9 tons of weapons-usable plutonium annually. Although Japanese officials insist the plutonium will be used for power generation only, just two of the country’s fifty reactors are back online since the 2011 Fukushima nuclear accident. The Obama administration is not pleased with the timing in light of North Korea’s recent atomic weapons tests. Many in the US fear Rokkasho’s going on line will spark a nuclear competition among nearby countries, such as China and South Korea.
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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