Monthly Archives: December 2025

Approaching 50 Years of String Theory

Posted on December 19, 2025 by woit

Brian Greene has a new video out today, of himself talking to Edward Witten, mainly about string theory. Pretty much the usual decades-old hype, with nothing even slightly different than what a similar conversation would have consisted of 20 years … Continue reading →

Posted in This Week's Hype | 10 Comments

Future Collider Update

Posted on December 18, 2025 by woit

Various news about a possible future collider, all pointing to the CERN FCC-ee as the leading proposal. For up to date background technical information on proposed colliders, including cost estimates, see here. The Chinese CEPC plan is now on hold, … Continue reading →

Posted in Experimental HEP News | 15 Comments

The Situation at Columbia XXXV

Posted on December 13, 2025 by woit

A quick update on what has been going on here at Columbia in recent months: The campus has been rather quiet this semester, about to get much more so as the semester ends and we go into winter break. The … Continue reading →

Posted in The Situation at Columbia | 16 Comments

Theoretical Physics Slop

Posted on December 9, 2025 by woit

In recent years I’ve been struggling with depressive thoughts whenever I think about what’s been going on in the field of fundamental theoretical physics research. As an example of what I find depressing, today I learned that the Harvard Physics … Continue reading →

Posted in Uncategorized | 25 Comments