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David Friedlander-Holm

@friedlad.bsky.social
197 followers 299 following 137 posts

Dad, Astronomer/High School Teacher, Cyclist, Runner, Above average height, YIMBY. ikaros.xrg.us/eos/index.html

PostsRepliesMedia
Reposted by David Friedlander-Holm
David Weiskopf believes in you @dave.bzky.team · 14/09/2026
A statistic that haunts me because it is 100% true and shocking and useless in advocacy precisely because it is true and shocking: Policy that enables a 1-car lifestyle rather than 2 is equivalent to giving a family a $25,000 annual pay raise.
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Patrick Siegman @siegman.biz · 12/09/2026
If Connie Chan had her way, there would still be cars driving and parking on JFK Promenade. If she is elected to Congress, it's a safe bet that she will consistently vote to fund more high-speed roads, fewer bike lanes, fewer bus lanes, and fewer pedestrian spaces.
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Katie Grote @katiegrote.bsky.social · 12/09/2026
And if Connie Chan had her way, there would still be cars on JFK!
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Allison Gill @muellershewrote.com · 11/09/2026
Okay everyone. Here’s the YouTube interview with @jimmykimmel.com and @jamestalarico.bsky.social You know what to do. Watch it. Share it. Donate. Bury them. youtu.be/WLDE9LrGpNk?...
youtu.be
Jimmy Kimmel’s Interview with James Talarico That the FCC Doesn’t Want You To See
YouTube video by Jimmy Kimmel Live
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David Ho @davidho.bsky.social · 01/09/2026
The carrot approach to speed cameras: Speed-detecting traffic signals that reward drivers for obeying the speed limit. If a driver is speeding towards the light, it will turn red. If the driver is approaching at a safe speed, it will turn green. These signals reduce speeding and injury crashes.
khon2.com
Cities see benefits from speed-detecting traffic signals
“The data is telling us that we’re seeing major, major reductions in both speeding drivers and in injury crashes,” Turner said.
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Yonah Freemark @yonahfreemark.com · 01/09/2026
New York’s congestion pricing program has resulted in a statistically significant reduction in travel times for EMS vehicles
nber.org
Urban Congestion Pricing and the Response Times of Emergency Medical Services
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Charter School Abolitionist 🇮🇷 @maniccage.bsky.social · 29/08/2026
We didn't seem to need a study to install a single flock camera or any shotspotter hardware, but if you want a bike lane, you're gonna need 40 people to die in the same spot before we can investigate the need.
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David Friedlander-Holm @friedlad.bsky.social · 28/08/2026
This hurts.
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Garrett M. Graff @vermontgmg.bsky.social · 25/08/2026
One way you know Dolly Parton lived life the right way: I don’t think anyone’s going to get fired for accurately quoting Dolly Parton today.
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Cathey🌎🦋🗽☮️❤️‍🧡💛💚💙💜🏳️‍🌈 🇺🇦 💙 💛🇵🇷 🇨🇦 🇲🇽 🇵🇦 🇬🇱 ⭐️ @cleverhandlebars.bsky.social · 25/08/2026
The GOP Supreme Court is the greatest threat to our freedoms and democracy
deanobeidallah.substack.com
The GOP Supreme Court is the greatest threat to our freedoms and democracy
We must win control of SCOTUS!
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jamelle @jamellebouie.net · 25/08/2026
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The Fact of Other Minds Stan Account @csilverandgold.bsky.social · 23/08/2026
Not that the diesel bill will hit my heating costs I just mean generally an increase in oil and gas costs. But I will bravely suffer being even broker than I am now for 55 Democratic senators.
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Courtney Milan @courtneymilan.com · 23/08/2026
Hey all, if you are looking to adopt cats in the Northeast, this is for you.
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David Friedlander-Holm @friedlad.bsky.social · 22/08/2026
Yes. Every time I hear the name.
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Urvi @theurv.com · 22/08/2026
Like the amount of effort folks against Sunset Dunes are putting in there could be used literally anywhere else… we have so many hills in SF one could die on and they choose that fight? 🫠
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Mike Levin @mikelevin.org · 19/08/2026
NOAA launches the weather balloons, floats the ocean buoys, flies the satellites, and staffs the forecasters that tell us when storms are coming. That data supports about two-thirds of the economy, roughly $1.3 trillion a year, and it paid us back $73 for every dollar we spent on it.
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The War on Cars @thewaroncars.bsky.social · 19/08/2026
"Examinations of London schoolchildren before and after the introduction of the city’s ultra-low emission zone (Ulez) found a restoration of lung capacity that had been stunted by exposure to pollution."
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Darren Buck @bikepedantic.bsky.social · 17/08/2026
Love that a prominent scientist is out here defending the science of transportation! Through scientific inquiry, we've learned and proven many of the things that work (and don't) for surface transpo safety. Bike lanes are proven to improve safety. If you believe in science, you agree with that.
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Katie Mack @astrokatie.com · 17/08/2026
14 hours later and my mentions are still full of angry treatises about badly behaved cyclists. Bike lanes are not a reward for good cyclist behavior! They are infrastructure proven to make cities safer for ALL ROAD USERS. Whatever way cyclists have wronged you is irrelevant to the discussion!
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Katie Mack @astrokatie.com · 16/08/2026
Every conversation about bike lanes is like: "Car crashes kill a huge number of people every day, including pedestrians, cyclists, & car occupants. Good bike infrastructure has been shown to make everyone safer (& doesn't increase congestion)." "But sometimes cyclists break rules & hit people!"
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Prof. Eliot Jacobson @climatecasino.net · 15/08/2026
A little Friday extra ... something to tell your pals over a pint. According to the latest CFSv2 model run, this El Nino has just shy of a 95% chance of breaking 4.0°C above the 1991-2020 baseline in November.
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alec karakatsanis @equalityalec.bsky.social · 12/08/2026
THREAD. Contrary to what you are being told, 40 years of polling have established that shifting money away from police/prisons toward social services is one of the most popular public policies among *all* political demographics. But it's not just that, it goes way deeper.
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Cool Bike Art @coolbikeart1.bsky.social · 11/08/2026
If you live in a city you shouldn't have to own a car.
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Phil Plait @philplait.bsky.social · 08/08/2026
This is a really interesting story, and good news! It's also well written.
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bikebike @bikebikeyyc.bsky.social · 06/08/2026
"The reason young people are riding their electric devices on the sidewalk is because it is not safe to ride them on the streets. The reason the streets are not safe is because of all the cars and trucks." (and increasingly, really bad driving habits) www.nsnews.com/opinion/opin...
nsnews.com
Opinion: Cars are the biggest threat on the road, not kids on e-scooters
All the outrage we feel about teens weaving on e-bikes and scooters would be better spent figuring out how to keep massive motorized vehicles away from all other road users
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David Ho @davidho.bsky.social · 02/08/2026
According to anti-cyclist replies, here's evidence that cars and bikes are equally dangerous: 🚗: They kill ~40000 people in the US annually 🚲: I saw a cyclist run a red light 30 years ago
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David Friedlander-Holm @friedlad.bsky.social · 01/08/2026
Take the lanes
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David Friedlander-Holm @friedlad.bsky.social · 31/07/2026
The WNBA, just like the rest of the leagues. “Fine if you stick to the games” is true about most of the leagues… it’s the rest of it that make them horrible (CTE, Being anti-pride, etc).
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Brendon 🐻🌪️❄ @brendonme.bsky.social · 29/07/2026
They don't know that this is the furthest away picture ever taken of the Grand Teton
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David Friedlander-Holm @friedlad.bsky.social · 28/07/2026
Gen X thinks they’re special… 🤷‍♂️
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Allyship @allyship.bsky.social · 27/07/2026
The asshole that owns the Dodgers also owns the Lakers. Oh, and he’s also under federal investigation for a 16 billion dollar fraud scheme. Will that ring be enough for a pardon?
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russellmania50.bsky.social @russellmania50.bsky.social · 26/07/2026
Mitch has been missing for 6 weeks and we know nothing!
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Psaki's Apprentice @sleepycongressman.bsky.social · 26/07/2026
No where in the US Constitution doe sit say that there have to be nine Justices on the Supreme Court No Ammendement required for an update
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Jeff Sharlet @jeffsharlet.bsky.social · 26/07/2026
Since a certain movie is in the public consciousness: this obscenity — in the Greek sense of the term — is like something out of an ancient play. www.huffpost.com/entry/iran-w...
huffpost.com
Iran War Widow Says 'Nobody Has Reached Out' To Explain Husband's Removal From Death Toll
Jamiah Gonzalez-Swinton gave a tearful interview after her late husband, Sgt. Michael Emmanuel Swinton, vanished from the Pentagon’s public casualty count.
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Wil Eelsing @wileelsing.bsky.social · 25/07/2026
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Brent Toderian @brenttoderian.bsky.social · 25/07/2026
Riding bikes is 10X more important than electric cars for reaching net-zero cities. And that’s just the climate emissions. Doesn’t include the massive public & personal cost difference, the air & noise pollution difference, the massive space difference, etc, etc…Via @theconversation.bsky.social
theconversation.com
Cycling is ten times more important than electric cars for reaching net-zero cities
Active travel can help tackle the climate crisis earlier than electric vehicles – even if you swap the car for a bike for just one trip a day.
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AltWarDept @altdod.bsky.social · 24/07/2026
Asked my 30 year old son “how high do gas prices have to go before the people say “that’s too much.” He says they won’t. Everyone drives, they have too. As I recall my father getting mad when gas went over 50¢/gallon, and taking the bus to work.
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Now I am become Jeff, the destroyer of Whorls @trollbreath.com · 24/07/2026
So, we can call it the CyberEdsel now, right? finance.yahoo.com/markets/stoc...
finance.yahoo.com
It’s Looking Like the Cybertruck Is the Biggest Flop in Automotive History
One for the history books.
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Waldo Jaquith @waldo.net · 24/07/2026
The claim “RFK Jr. does not fuck chickens” is not an evidence-based claim because studies have not ruled out the possibility that RFK Jr. fucks chickens.
KEY POINTS
• The claim 'vaccines do not cause autism’ is not an evidence-based
claim because studies have not ruled out the possibility that infant vaccines cause autism.
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David Friedlander-Holm @friedlad.bsky.social · 23/07/2026
Not ready for our dynamic roads-or static ones. Get the clankers off the streets!
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Michael @scottgoblue314.bsky.social · 22/07/2026
These are not allowed to operate without a driver, but there have been reported sightings. If you see one with no one behind the wheel, get it on camera
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Danielle Kurtzleben @titonka.bsky.social · 22/07/2026
Watching the Greer hearing and gotta say, it always stuns me to hear tariff opponents say that other countries pay the tariffs. Uh dudes, that’s wrong. AND it’s the framing tariff proponents use.
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e.w. niedermeyer @niedermeyer.online · 22/07/2026
this comparison leaves out a key point: the Edsel sold roughly twice the Cybertruck's volume at a time when the overall car market was just 6m units/year instead of the current 16m units/year that makes the Cybertruck the much, much bigger flop, hands down
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Arbaz Kakkar5 @arbazkakkar5.bsky.social · 21/07/2026
If a Dem governor won't even push the envelope and appoint a new senator for missing McConnell's seat, what do you think they'll all do if DJT calls off elections or other shenanigans?
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Infrastructure Weak @infrastructureweak.bsky.social · 21/07/2026
I've just published this article, Part 1 of 4 about the choices that will enable San Francisco to finally build a Geary metro. medium.com/@infrastruct...
medium.com
Plan the Geary metro right, right now
Part 1: Strong corridor; tight station spacing; frequent trains
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Jon Cooper @joncooper-us.bsky.social · 20/07/2026
Kentucky Gov. Andy Beshear has the constitutional authority to temporarily appoint someone to fill Mitch McConnell’s seat. If GOP lawmakers want to challenge that, they can do so. This will be the first big test to see whether Beshear really is presidential material. I hope he passes the test.
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Emily Atkin @emorwee.bsky.social · 20/07/2026
This. This is the correct, science-backed, responsible framing. Wish more news outlets did it like the CBC.
cbc.ca
'Just stop burning fossil fuels.' Scientists stress that our smoky skies only have one true fix | CBC News
Smoky skies in Toronto have led to new scrutiny of government efforts to fight fires and manage forests. But scientists say the realistic way to tackle the smoke is fighting climate change itself.
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The Contrarian @contrariannews.org · 20/07/2026
"If you can figure out a way to zero in on the most critical spots on the electoral map and then propel even a handful of people to vote who wouldn’t have voted otherwise or to switch their vote from one candidate to another, you can change everything."
contrariannews.org
The Number of Votes Needed to Change Everything Is Smaller Than You Think
There are long periods of national political-geologic stability in American history. This is not one of them. In this moment, the volcanoes keep erupting.
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Save Standard Time @savestandard.bsky.social · 18/07/2026
👏 US @repnikema.bsky.social (D-GA) now sponsors the Sunshine for Our Kids Act, to restore healthier/safer permanent Standard Time nationwide, while granting permanent Daylight Saving Time for the minority of states requesting it—thank you! 👉 Tell your congress members to sponsor too!
Maps, photos, charts, and historical clippings comparing permanent Standard Time to permanent Daylight Saving Time.
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Allison Gill @muellershewrote.com · 18/07/2026
The best way to get to the bottom of the McConnell question is for the governor to appoint a replacement. The GOP legislature passed a law stripping him of that power, but it goes against the state constitution. If they refuse to seat the replacement, take them to court. There’s zero downside.
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