NPR: NPR’s Robert Krulwich recently made a bet with Kevin Kelly, founding editor of Wired magazine, who claimed that “there is no species of technology that’s gone globally extinct on this planet"âmdash;in other words, there is no tool, no invention ever manufactured by humans that isn’t still being made new today. Krulwich appealed to his readers to come up with suggestions to prove Kelly wrong, which he narrowed to what he thought were three definitely dead technologies: radium suppositories, a Roman corvus (a plank used to board enemy ships), and the memory device inside a 1950s jukebox. Kelly proves him wrong, in this entertaining NPR blog.
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.