New York Times: Lithium-ion battery manufacturer A123 Systems, which has been struggling financially for the past year, filed for bankruptcy on Tuesday. Based in Waltham, Massachusetts, the company was a major player in the Obama administration’s green-energy program, having received $249 million in grant money from the Department of Energy. Earlier this year, A123 had suffered a setback when it was forced to recall some $55 million worth of defective batteries. Despite trying to strike a deal in August to sell a majority share to a Chinese auto parts manufacturer, the company will end up selling its assets to Johnson Controls, another US battery producer that has also received federal assistance.
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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