Wall Street Journal: In an op-ed, L. Rafael Reif, an electrical engineer and president of MIT, ranks the technological “upheaval” posed by online education with the one that the printing press caused. Citing edX, Coursera, Udacity, and “other online-learning platforms” that “offer the teaching of great universities” inexpensively, he predicts that “we haven’t seen anything yet” and observes that this is happening just when “residential education’s long-simmering financial problem is reaching a crisis point.” In the soon-to-arrive future that Reif envisions, information technology, thanks to its possible scale, can make “residential education better and less expensive even as it promises to offer education to many millions more people.” He summarizes: “The positive development in online learning and the negative trend in residential-education costs came about independently, but it’s now impossible to consider the future of higher education without thinking of both.”
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.