James Bullock

@jbprime.bsky.social

Dean @dornsife.usc.edu‬

In rats fat/sugar sparked strong memory responses (helping find that food in the future?) but chronic exposure worsened memory formation over time. This diet early in life => weaker communication btwn gut & hippocampus later=> reduced memory-related brain responses later in life

USC Dornsife College of Letters, Arts & Sciences@dornsife.usc.edu · last wk.

A memorable meal may begin in the stomach as well as the brain. USC Dornsife biologists found that nutrients in food trigger gut signals that activate the brain’s memory system: dornsife.usc.edu/news/stories...

Congratulations to Yu Deng, recipient of a 2026 Fields Medal, one of mathematics’ highest honors. The award recognizes work he carried out while on the USC Dornsife faculty, advancing fundamental questions in mathematics and mathematical physics. dornsife.usc.edu/news/stories...

2026 Fields Medal honors math research conducted at USC Dornsife

Yu Deng, now at the University of Chicago, is recognized for mathematics studies he carried out during his years on the USC Dornsife faculty

dornsife.usc.edu

Excellence in academia is like a river. Great people often flow from place to place. But the environments they flow through are constants. Proud that former @dornsife.usc.edu Prof. Yu Deng was recognized with a Fields Medal today for the work he did here @usc.edu www.nytimes.com/2026/07/23/s...

Four Young Mathematicians Receive Prestigious Fields Medals

The awards are bestowed only once every four years to mathematicians under the age of 40.

nytimes.com

Mark Schroeder, USC Professor of Philosophy @dornsife.usc.edu has devoted much of his research to understanding how the way that we interpret each other as people shapes our relationships. That work has helped him understand why he struggled to be grateful a bit about how to do better.

How to be grateful to someone – even when you don’t want to

Struggling to find your sense of gratitude? Try thinking differently about what caused the person’s actions.

dornsife.usc.edu

Check out the nice video that @texasastronomy.bsky.social postdoc Jenna Samuel made to explain her work on galaxy formation in the early cosmos! 🧪

NSF-Simons AI Institute for Cosmic Origins (CosmicAI)@nsfsimonscosmicai.bsky.social · 2mo ago

Using cutting-edge simulations, Dr. Jenna Samuel, Prof. @mbkplus.bsky.social, & Asst. Prof Julian Munoz investigated a major puzzle revealed by the JWST: why do the earliest galaxies appear brighter, more massive, & clumpier than expected? cosmicai.org/news/researc... www.youtube.com/watch?v=h5dI...

As an example, the image below shows how early galaxies of different masses (each row) would look if we could see the brightness in all stars (left), or the stars weighted by age (middle), or just what JWST can see (right). As powerful as JWST is, there's a lot going on that it can't resolve!

left columns show lots of clumps with a diffuse background (top and middle) or just a point (bottom). Roughly the same for the middle, though the diffuse is less prominent. The right column shows how the other columns get smeared out, losing lots of the information.

The formation of galactic disks is a surprisingly tough topic to understand. In a great paper, UCI grad student Olti Myrtaj shows how and why the Milky Way disk undergoes 3 distinct phases (chaotic -> thick disk -> thin disk). A thin disk requires a virialized inner CGM and slow(er) gas accretion. 🧪

James Bullock@jbprime.bsky.social · 3mo ago

Proud to share our latest paper led by PhD student Olti Myrtaj ➡️ Why did the Milky Way evolve in three kinematic phases? arxiv.org/abs/2605.22806

One of our newest economics graduates is headed to the world final of a global innovation competition. Darnell Adler was named one of three U.S. winners of Red Bull Basement for Lifeline AI, his personal safety startup. We’re cheering you on, Darnell. Fight On! ✌️ dornsife.usc.edu/news/stories...

USC grad wins US Red Bull competition, heads to world final

Darnell Adler, who studied economics at USC Dornsife, is one of three to win Red Bull Basement, a competition for student innovators.

dornsife.usc.edu

Impressive work by Patricio Gallardo of @upenn.edu and @dornsife.usc.edu Prof. Kris Pardo et al. => pairwise velocities measure gravitational force law on cosmic scales, 1/r^n w/ n= 2.1 ±0.3, MOND is a poor fit (PTE=3.65×10−3), while ΛCDM fits well (PTE=0.17). dornsife.usc.edu/news/stories...

Test of gravity using galaxy clusters supports dark matter

Scientists test a fundamental rule of gravity across hundreds of millions of light years — and it holds up

dornsife.usc.edu