San Francisco Chronicle: Last year, San Francisco’s Board of Supervisors voted 10–1 to require the manufacturers of cell phones to disclose the level of radiation emitted by their phones. The levels would have appeared next to phones on display in retail outlets. To fight the bill, which never became law, the Cellular Telecommunications and Internet Association sued the city, arguing that the Federal Communications Commission has certified that all phones marketed in the US are safe. Faced with the prospect of both losing the suit and paying the association’s legal fees, the city has put the bill on indefinite hold. As the Chronicle‘s Heather Knight reports, the city will likely enact a weaker version of the original bill.
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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