National Geographic: Japan is in the middle of one of the most severe electricity shortfalls in history, according to a report by the International Energy Agency. Before the disaster at the Fukushima Daiichi power plant in March, nuclear energy provided a third of Japan’s electricity. Prime Minister Naoto Kan has set a goal of 10 million solar-powered homes by the year 2020 and has abandoned prior plans for nuclear expansion. That realignment doesn’t address the immediate problem, however; the government has asked residents of Tokyo to reduce electricity consumption by 25% and residents of the rest of Japan to reduce consumption by 15%—at a time of year when air conditioning usually places high demands on the grid. But Japan’s electricity demand is already 20% below the world average, and 30% below that of the US, and it’s unclear how much more small and medium-sized businesses will be willing to cut their demand. Individual citizens aren’t resisting conservation, but their acceptance of it seems more resigned than enthusiastic, so far.
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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