Ariel Bierbaum
arielbphd.bsky.social
Ariel Bierbaum
@arielbphd.bsky.social
urban + education researcher | lover of cities + trees + transit | roots in NJ-PHL-OAK | PreOrder #SchoolsforSale https://press.uchicago.edu/ucp/books/book/chicago/S/bo268432754.html
just started the audio book on your recommendation! have 2 other friends reading along too. delightful and charming! thank you!
January 7, 2026 at 2:59 PM
Reposted by Ariel Bierbaum
USPS quietly changed its postmark rules — mail is no longer dated when you drop it off. The “official” date is when it hits automated sorting — sometimes days later

Which could have major implications for mail in voting — it’s a clever way to disenfranchise voters that’s going largely overlooked
December 29, 2025 at 7:14 PM
Reposted by Ariel Bierbaum
Congestion pricing has improved commute times, bus speeds, noise levels, traffic safety, and businesses and restaurants have seen more profits. A runway success by any measure. And a model for other cities too. Gift 🎁 link: www.nytimes.com/interactive/...
Congestion pricing after one year: How life has changed. (Gift Article)
How life has changed in the New York area, according to data on traffic, transit and the responses of 600 readers.
www.nytimes.com
January 5, 2026 at 2:44 PM
SFSU introducing a new word (to me) in the destruction of higher ed: "tenure density" 🤔
December 23, 2025 at 2:58 PM
Reposted by Ariel Bierbaum
A researcher I work with complained how tedious it was validating the analysis from an LLM. I pointed out it’s kind of necessary if they want to use LLM’s for that kind of work, and to prove the haters wrong.
suspect a big reason why many academics and others who work in areas where getting facts RIGHT is key are disinterested in using LLMs for research:

they’ve tried it, they keep noticing major errors in output, and they conclude that having to verify all that doesn’t actually save them time.
December 22, 2025 at 5:51 PM
I'm spinning from the cognitive dissonance of this ask.
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December 22, 2025 at 5:18 PM
This is reprehensible. The streets in DTSS are built for speed and the comfort of drivers not for the transit-accessible and pedestrian-oriented downtown that DTSS has become. How many more deaths will it take for @marylanddot.bsky.social @mcdotnow.bsky.social to change how they work?
December 19, 2025 at 6:20 PM
don't give them any ideas😔
December 19, 2025 at 6:15 PM
There are wonderful people making wonderful things happen. Here is one story of architects Rashida Ng and Eduardo Rega Calvo and youth in Philly taking on the power to (re)imagine the future of their city. nextcity.org/urbanist-new...
These Eighth-Graders Are Envisioning Philly’s Next 250 Years
In a hands-on urban planning and architecture studio, Philly eighth-grade students designed infrastructure that centers equity, community needs and lived experience.
nextcity.org
December 19, 2025 at 6:04 PM
Reposted by Ariel Bierbaum
"This promise of an AI future, is really just a collective anxiety that wealthy people have about how well they're gonna be able to control us in the future."

- @tressiemcphd.bsky.social with an absolute mic drop moment about AI bullshit.

Incredible words.
Listen to all of it!
December 19, 2025 at 12:24 PM
local jurisdictions need to have mechanisms in place to manage condo fees and board policies to ensure durable affordability, however.
December 18, 2025 at 3:21 PM
In Maryland's most populous counties, the majority of new student enrollment comes from turnover of existing single family homes, not new construction.
December 18, 2025 at 3:16 PM
Reposted by Ariel Bierbaum
In any choice system (chart, mag, vouchers, intra-dist, open enr), schools can make staying so miserable parents “voluntarily” pull kids: think daily calls, endless mtgs, CPS threats over absences. Not valorizing zoned schools as a model of justice, but this is a persistent problem in need of remedy
December 18, 2025 at 12:31 PM
Immigration policy is schools policy.
ICE Arrests Disrupt Schools, Prompting Fear Among Families www.nytimes.com/2025/12/17/u...
December 17, 2025 at 7:38 PM
Reposted by Ariel Bierbaum
Finalizing next semester's syllabus...

(Or: Hokusai, "Fujimigahara in Owari Province" [c. 1832])

#Art
December 16, 2025 at 7:10 PM
love this! (and another gentle reminder for me to get that paper about conditional access to public schools finished and out the door....)
Oh, we're doing school transportation discourse!💜

Every trip to public school where 0 of these 3 things is available

◾Safe Routes to School that are actually safe
◾frequent & convenient public transportation
◾school bus transportation as a public service, like public schools

is a policy failure.
December 16, 2025 at 6:43 PM
Excited to be part of this conference! register!
Free public registration is now open for the Crossroads Convening on Transportation Equity and Justice, 1/15/26 at the MLK Library in DC.

Registration is free. We've got three sessions across four tracks. Confirmed speakers include Robert Bullard, Anna Zivarts, Naomi Doerner, and Gretchen Goldman.
Crossroads: A Transportation Equity and Justice Convening
Join the Union of Concerned Scientists and our transportation partners for a one-day event to discuss transportation equity and justice. Thursday, January 15, 2026, 8:30 a.m. – 3:00 p.m. ET, at the Ma...
secure.ucs.org
December 12, 2025 at 7:10 PM
Reposted by Ariel Bierbaum
Manslaughter is functionally decriminalized in much of the United States if you do it with a nice car.
She was in crosswalk.

He was taking a fuqen left turn.

And:
December 10, 2025 at 8:50 PM
Reposted by Ariel Bierbaum
It finally happened. One of our fabulous @umdbooklab.bsky.social interns, @isabelleberube.bsky.social, printed (with movable type!) the entire first page of Benjamin’s WORK OF ART IN THE AGE OF MECHANICAL REPRODUCTION. That’s all handset type. They have ambitions to do more. 🤯
December 10, 2025 at 9:08 PM
But what about all those cluster hires?!?! :/
December 10, 2025 at 3:44 PM
Reposted by Ariel Bierbaum
Is there a piece of scholarship on your syllabus that students really connected with or really worked well for your semester? You should take some time today to email those authors and tell them. I love sending these emails.
December 10, 2025 at 3:39 PM
Reposted by Ariel Bierbaum
National study (Gibbons, Appleyard) uses a (better?) walkability metric (EPA) & finds gentrification linked to walkability. www.jtlu.org/index.php/jt... Our paper summarized below present a conceptualization of how racial capitalism formative in such patterns.
December 9, 2025 at 5:33 PM