Economist: Biologists have found a new way to track cells over multiple generations: by inserting fluorescent nanoparticles into the cells and imaging them as they replicate. Previous methods had involved gene insertion, which could damage the cells, and the use of image-recognition software, which produced variable results. By inserting the fluorescent nanoparticles into several dozen cells and taking snapshots over a period of 40 hours, researchers were able to create a time-lapse movie. They also used computer software to track which parent cells divided into which daughter cells. Tracking cell lines, a time-consuming process when done by hand, is vital in determining drug effectiveness.
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.