NPR (audio): The debut of the “18 Seconds Movement” encourages Americans to replace incandescent light bulbs with more energy-efficient “compact fluorescent bulbs.” You’ll see ads on the Internet and in movie theaters, sponsored by conservation groups and by big companies who are selling the bulbs. Lawmakers in California and New Jersey are considering bans on incandescent bulbs.
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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