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Dr Grace Peng

@gspeng.bsky.social

16K followers 2.9K following 11K posts

Same interdisciplinary scientist as on the other sites with the same handle. Chemistry, math, physics, meteorology, GIS, data whisperer. Natural resources director, League of Women Voters of Los Angeles Co. She/Her https://badmomgoodmom.blogspot.com/

badmomgoodmom.blogspot.com

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Dr Grace Peng @gspeng.bsky.social · Oct 20

Advertise your account with just one image.

An eBike with yellow panniers and a white handlebar basket parked in front of a gray Cybertruck in a parking lot. Palm trees and blue skies

Dr Grace Peng @gspeng.bsky.social · 13m

LA weighted density is denser than most outsiders expect. Northern OC as well

Dr Grace Peng @gspeng.bsky.social · 20m

If LA Metro means LA County, then my census tract density of 18k/sq mi is about 80th percentile nationally and slightly lower within county. Numbers look in right ball park.

Reposted by Dr Grace Peng

cait (and adonis) @cait.bsky.social · 1d

"well what are the Democrats supposed to do" I don't know! They're supposed to know! I'm not the one who sought and obtained a political position that would require me to know what to do when the ruling party attempts to install the President as a dictator!

Dr Grace Peng @gspeng.bsky.social · 1h

Wrapping up the thread about days I drove:
I drove 2 days during "a week without driving" and 2 days the week after. 1-2 times a week is a pretty normal pattern for me.
Stuff happens. My ankle was too painful for cycling (& kinda painful for driving). His rear wheel spokes broke.

Dr Grace Peng @gspeng.bsky.social · 1h

Will we see you tomorrow? This is the 15th year of CicLAvia and the 15th time a CicLAvia route goes through Boyle Heights. BH is throwing a quinceañera party and we are all invited.

Will we see you?
Wave when you see us!
www.ciclavia.org/ciclavia_hea...

CicLAvia—Heart of LA presented by Metro

Join CicLAvia on Sunday, October 12 from 9 am - 4 pm for a FREE community event. Come walk, run, bike, skate, and chill along open streets. All ages and abilities are welcome!

www.ciclavia.org

Dr Grace Peng @gspeng.bsky.social · 2h

D walked home while I was waiting for my food. Husband and I walked part way home through the hairy intersection. When we got into our quiet neighborhood, he rode the ebike while I sat on the back as a passenger.
Tomorrow is CicLAvia so we plan to bike, train, bike. Then reverse.

Dr Grace Peng @gspeng.bsky.social · 2h

Saturday, rode 0.7 miles to friend's house & carpooled to event 6 mi away. She ran an errand that required her car on the way back.
Husband & D walked to movie and texted that they stopped for tacos on the way home. I hopped on my ebike and rode 1.1 mi to meet them

Dr Grace Peng @gspeng.bsky.social · 2h

Friday, I felt well enough to ride an ebike with higher assistance than usual. 20 miles ebike, 15 miles train. Husband and daughter walked to grocery store without me.
Daughter rode bus to school, husband biked to work (using his folding bike during commuter bike repair)
bsky.app/profile/gspe...

Dr Grace Peng @gspeng.bsky.social · 1d

Went on a transit and bike adventure today with a friend who gets the occasional Friday off when they need to work weekends. 3 bikes on our train

2 ebikes with panniers and crates in the bike section of a Metro LA light rail car

Dr Grace Peng @gspeng.bsky.social · 2h

Thread continues here
bsky.app/profile/gspe...

Dr Grace Peng @gspeng.bsky.social · 2h

Thursday, rested at home. Drove with husband after dinner to pick up his bike (that he left for repair on Wed) and shop at REI bc he couldn't find his REI card.

Dr Grace Peng @gspeng.bsky.social · 2h

Thursday, rested at home. Drove with husband after dinner to pick up his bike (that he left for repair on Wed) and shop at REI bc he couldn't find his REI card.

Dr Grace Peng @gspeng.bsky.social · 2h

Oops, broke thread bsky.app/profile/gspe...

Dr Grace Peng @gspeng.bsky.social · 2h

Oops. I drove 2 days in a week without driving.
What about the next week?
It started normal and car free until I twisted my ankle in a spectacular fall.
I drove to a LWVBC meeting & then to meet my family for dinner. (Daughter took a bus, husband biked from work). Drove home together

Dr Grace Peng @gspeng.bsky.social · 2h

Oops. I drove 2 days in a week without driving.
What about the next week?
It started normal and car free until I twisted my ankle in a spectacular fall.
I drove to a LWVBC meeting & then to meet my family for dinner. (Daughter took a bus, husband biked from work). Drove home together

Dr Grace Peng @gspeng.bsky.social · 2h

That stands out because I am ordinarily a car last person. But, the day before that, I drove to the train station and took a train+bus to UCLA. I didn't take my ebike bc I didn't feel safe leaving it locked by the train station so long. I didn't want to bring my folding bike into a crowded room

Dr Grace Peng @gspeng.bsky.social · 2h

I drove on the week without driving bc I was delivering supplies for a SoCal Transit Month event. Another volunteer used his cargo bike to transport stuff from my stuffed Prius wagon to the meeting space (94 sign ins! Packed house)

White and black bike with a cargo box up front next to a blue station wagon with an open hatch and boxes spilling out

Dr Grace Peng @gspeng.bsky.social · 2h

Reflecting on a week without driving and the week after 🧵

Reposted by Dr Grace Peng

Mark Histed @markhisted.org · 6h

So to summarize:

- There is a pattern where Vought makes the RIFs too wide, apparently to flood the zone with sh*t and see who will draw protests.
- They restore some people after outrage and work by us.
- But we are still left with many who remain fired at the end.

Reposted by Dr Grace Peng

Blake Leyh @earlofedgecombe.bsky.social · 14h

If you think you know why US newspapers died, this feature documentary now streaming for free on PBS might surprise you. It wasn't the Internet. Newspapers were specifically targeted by vulture capitalists.

I composed the score for the film, which features electric cello & Crowfoot guitars.

Stripped for Parts: American Journalism on the Brink

A handful of journalists rebel against a hedge fund that is gutting newspapers nationwide.

Reposted by Dr Grace Peng

Caitlin Rivers @cmyeaton.bsky.social · 8h

I can't get over how the CDC layoffs are coming less than two months after the attempted mass shooting. The agency is being taken apart brick by brick. The public servants there do not deserve this.

Reposted by Dr Grace Peng

Jennifer Nuzzo, DrPH, SM @jennifernuzzo.bsky.social · 4h

Some of these people have now been fired and rehired TWICE since January. The current state of dysfunction is mind boggling.

Sheryl Gay Stolberg @sherylnyt.bsky.social · 6h

OOOPS! UPDATE: Two HHS officials tell me that disease detectives, measles response officers, global health officials and the MMWR staff were laid off by mistake and will be reinstated. But Washington office is still RIFed

Sheryl Gay Stolberg @sherylnyt.bsky.social · 1d

BREAKING: Friday night massacre underway at CDC. Doznes of "disease detectives," high-level scientists, entire Washington staff and editors of the MMWR (Morbidity and Mortality Weekly Report) have all been RIFed and received the following notice:

Dr Grace Peng @gspeng.bsky.social · 3h

Or this www.caranddriver.com/news/a651026...

www.caranddriver.com

Dr Grace Peng @gspeng.bsky.social · 4h

Honda sponsoring program to teach every kindergartner (in their US HQ city of Torrance) how to ride a bicycle tusd.community.highbond.com/document/b10...

Agenda Item Template

tusd.community.highbond.com

Reposted by Dr Grace Peng

Gene Ha @geneha.com · 4h

“…AI investments accounted for nearly 92% of U.S. GDP growth in the first half of 2025…”

The sooner the bubble bursts, the less damage it'll do to the US economy. But even now the damage will be HUGE. finance.yahoo.com/news/most-us...

Screenshot of the beginning of linked news article:

Yahoo! Finance
decrypt
Most US Growth Now Rides on AI—And Economists Suspect a Bubble
Jose Antonio Lanz
Wed, October 8, 2025 at 4:30 PM CDT 5 min read

What happens when artificial intelligence becomes both the economy's primary engine and its potential Achilles' heel? We may be about to find out.

Harvard economist Jason Furman recently said that AI investments accounted for nearly 92% of U.S. GDP growth in the first half of 2025. Basically, the entire American economy put its eggs in one algorithmic basket.

Reposted by Dr Grace Peng

Joyce Park @troutgirl.bsky.social · 4h

Guess they fired everybody who knows how to write a decent SQL query.

Apoorva Mandavilli @apoorvanyt.bsky.social · 5h

The Trump administration on Saturday scrambled to rescind layoffs of hundreds of CDC scientists who were mistakenly fired on Friday night in what appeared to be a substantial procedural lapse.

www.nytimes.com/2025/10/11/h...

Trump Administration Is Bringing Back Scores of C.D.C. Experts Fired in Error

www.nytimes.com

Reposted by Dr Grace Peng

Gravel Influencer @gravelinfluencer.bsky.social · 5h

I think the average person does not realize how ableist our entire country is, and relatedy how bad most media outlets are at covering disability issues.

Sara Nović @novicsara.bsky.social · 7h

People are really asking me why the mainstream news is barely reporting the closing of special ed dept at DoEd like all our big media companies aren't owned and run by absolute psychopaths.

Dr Grace Peng @gspeng.bsky.social · 5h

I am reading a book, too.
But the rubies and blue diamond round 😍