Nature: Under the pressure of current budget constraints, US support for ITER, the international fusion-energy reactor being built in France, may be waning. Since 2003, when US fusion researchers signed on to ITER, the project’s cost has quadrupled. Meanwhile, three existing US facilitiesâmdash;MIT’s Alcator C-Mod; the DIII-D in San Diego, California; and the National Spherical Torus Experiment in Princeton, New Jerseyâmdash;are feeling the pinch. A Department of Energy group met last week to discuss the US fusion program in light of President Obama’s proposed budget cuts for 2013. Although US fusion researchers voiced their continued support of ITER, they pointed out the importance of maintaining domestic projects: “Otherwise, the results from ITER will only benefit the rest of the world,” said Stewart Prager, director of the Princeton Plasma Physics Laboratory.
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
Get PT in your inbox
PT The Week in Physics
A collection of PT's content from the previous week delivered every Monday.
One email per week
PT New Issue Alert
Be notified about the new issue with links to highlights and the full TOC.
One email per month
PT Webinars & White Papers
The latest webinars, white papers and other informational resources.