Nature: The Advanced Research Projects Agency–Energy (ARPA–E) was established seven years ago to help promote investment in clean-energy technology. On 9 February, at the program’s annual summit, the project managers announced that technologies supported by ARPA–E have also received $850 million in private investment. The ARPA–E program itself has invested $1.1 billion in more than 400 projects, but determining the actual impact of the investment is difficult because of the slow-moving nature of the energy industry. However, over the past two years, venture-capital investment in the US has dropped sharply, with almost none going to early-stage clean-energy research. To help reverse that trend, the US government announced on 10 February a new initiative to increase private investment, which has already garnered a pledge of $1 billion from the University of California Board of Regents for investment in climate-friendly technologies.
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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