New York Times: General Electric has been working with lasers to develop a cheaper and easier method of producing enriched uranium for use in nuclear reactors, writes William Broad for the New York Times. It has long been thought that the extraordinary purity of laser light could be used to selectively excite uranium-235 and thus ease the identification and extraction of the precious isotope. However, until now, the approach has proved too expensive and difficult. After two years of testing, GE is seeking federal permission to build a $1 billion plant that could make reactor fuel by the ton. Critics fear, however, that rogue states and terrorists could use the technology to make bomb fuel. The Nuclear Regulatory Commission is weighing that issue and has promised to give GE a decision by next year.
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.