Nature: A diverse set of countries that includes Nigeria, Jamaica, and Syria have cold-war-era research reactors that run on highly enriched, bomb-grade uranium. Under a program run by America’s National Nuclear Security Administration, many of those reactors are being converted to run on less dangerous, lower-enriched fuel. Nature‘s Geoff Brumfiel reports on the program’s progress.
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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