Chronicle of Higher Education: The National Science Foundation reports that the number of science doctorates earned by foreign students fell last year by 3.5% compared with 2008. By contrast, the total number of science doctorates rose by 1.6%. Accounting for the small decline is tricky. Last year’s graduates began their courses before the current recession but after the tougher post-9/11 visa rules were put in place. One possibility is that students are delaying graduation until job prospects in the US and, in some cases, their home countries improve.
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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