NASA’s Largest Library Is Closing Amid Staff and Lab Cuts. Just awful. I used this library between 1987 and 1992 as an intern in high school and college. All of building 21 is closing, where all my mentors had offices, where the International Ultraviolet Explorer was controlled from.

To close out a huge year, we are lifting the paywall on Episode 254 so that all can enjoy this comprehensive review of the data on the global energy transition with @ember-energy.org's @nicolasfulghum.bsky.social xenetwork.org/ets/episodes... HNY from all of us at @TransitionShow! #lagniappe

My year taking transit using the Transit App in the USA.

Friends, our e-books are just $6.99 until 12/19. This deal is too good to pass up! Islandpress.org

New paper day! iopscience.iop.org/article/10.3... Measurement of the Photosphere Oblateness of γ Cassiopeiae via Stellar Intensity Interferometry with the VERITAS Observatory

From March 1, 1959: U-2 spy plane manual. Relax in the Big Dipper and watch the Space Race heat up. Not sure what this cartoon is doing in this manual. I looked at the manual while looking into the CIA-balloon film captured by the USSR to first image the farside of the Moon in 1958 (Luna III).

Operation Pumpkin Pie successful. #piesky

Great video on details of proportional ranked-choice voting using real ballots from the multi-seat race in Maine. From @lwvme.bsky.social. In Florida we really need multi-member districts for U.S. House so that more voters are represented by their choices. www.youtube.com/watch?v=Oh32...

Another reminder that a 13-year study found that protected bike-lanes led to a drastic decline in fatalities for all road users. ALL ROAD USERS. And painted bike-lanes? No safety improvement at all. For sharrows, it’s actually safer to NOT have them. Via @usa.streetsblog.org @nyc.streetsblog.org

Tell your U.S. House Rep to support money for biking and walking with help of the @bikeleague.org www.votervoice.net/Shares/B2kTM...

Another reminder that a 13-year study found that protected bike-lanes led to a drastic decline in fatalities for all road users. ALL ROAD USERS. And painted bike-lanes? No safety improvement at all. For sharrows, it’s actually safer to NOT have them. Via @usa.streetsblog.org @nyc.streetsblog.org

Like night and day. FDOT comes through on request to upgrade crosswalks near campus. They added bars to the rungs on all three legs of the intersection.

Two rainbows on the commute this morning!

I get that the news cycle is packed right now, but I just heard from a colleague at the Smithsonian that this is fully a GIANT SQUID BEING EATEN BY A SPERM WHALE and it’s possibly the first ever confirmed video according to a friend at NOAA 10 YEAR OLD ME IS LOSING HER MIND (a thread 🧵)

#CarFreeChallenge2025 My favourite time of the bike year!!!! Anyone else want to join in the fun? You don't have to have a Bunch bike to participate - any bike can play #yegbike #yycbike

As is often the case in matters of the First Amendment, violence, threats and power @maryannefranks.bsky.social is the best disinfectant...

From now on I'm making a point to use the correct language to describe technology that is currently described as "AI." An LLM isn't AI Image generators aren't AI Machine learning isn't AI Algorithms aren't AI AI is a marketing term that obscures meaningful critique of real technologies.

Today I gave away 23 bicycle tube patch kits at the hands-on "fix-a-flat" class at the local library "How-To" festival. I hauled everything there with my cargo bike! Common Cycle and Sally Caron have designed a great how-to guide.

A great, great privilege to chat with the incomparable Jill Lepore about her thoroughly paradigm-shifting new book We The People, and all the ways in which this constitutional stuck-ness is reversible and has been reversed in the past.

Rode my bike to the grocery store/pharmacy for food and vaccines. Currently shingles and flu vaccines are not politicized, but no Covid-19 for us in Florida. Pharmacist says it could be many weeks, suggests I look for a doctor who might provide it. #vaccines #bicycle

Happy 1st Day of School NYC! We need more school streets for our children! Paris shows us the way. How quickly is Paris moving? When I made this film 1 1/2 years ago, the city was at 180 school streets. NOW THEY HAVE REACHED 300! Over 33k have watched. You should! www.youtube.com/watch?v=ezPz...

Two grocery stores by cargo bike today. Stocking up for the long weekend. #cargobike #grocery #bicycles

Let's get to the results. SF only issued warnings for the first several months of the program, along with putting up plenty of warning signage. This had a *huge* result! On the 33 speed camera locations, drivers traveling >11 mph over the speed limit fell ~75%! That was just with warnings!

Last grocery run! Electrified Xtracycle. Bike now in its 11th year with rear internal hub transmission and pedal assist electric upgrades in early 2024.

Why I had to make a bike map for Daytona Beach.

They should be careful not to mess with NASCAR fans. Checkered-flag crosswalks near the International Speedway in Daytona Beach.

I call for the end of charlatan in positions of power.

Shady streets, so important in the summer! More please.

#ProportionalRepresentation could bring real competition and choice to every election. Learn more 👇

I walked slow and bus didn’t pass me until 5th Ave. Fun event! Good to read Mayor changed his mine. Hope this was the last time.

If you'd like to offer comments on the misleading & error-ridden US federal report, "Critical Review of Impacts of Greenhouse Gas Emissions on the U.S. Climate," the link to do so is below. Comments are due by Sept 2. Pls see next post for links to resources that debunk the claims in this report.

My first NYC Summer Streets! Miles-and-miles of car-free streets in Manhattan and beyond.

Fun walk from 1st Ave to 8th Ave on 34st in Manhattan racing the M34 bus on foot. I got to 5th Ave before the bus passed me. Thanks @transalt.org for advocating for faster buses!

I'm attending Transportation Alternatives's event, “Victory Lap! The Race Against the Bus on 34th Street” - sign up now to join me! www.mobilize.us/transalt/eve...

Can‘t beat a $2 ride to the airport by bus on a hot day. Transit app makes it easier. Tells you when to leave the house, when your stop is coming up.

After advocating for a crosswalk refresh/enhancement where a driver hit three students in March, FDOT comes through. Shouldn't there be a systematic survey/repainting schedule rather than individual advocates pressing for each one? Crosswalks fade on time scales < road resurfacing.

New to me (2025) WHO report on promoting cycling and walking! www.who.int/publications...

“Helsinki has not recorded a single traffic fatality in the past 12 months, city and police officials confirmed this week.” City engineer credits lower speed limits and smart design. I agree. #Helsinki #VisionZero

Oonee Pod is great, but the BikeLink network on the West Coast is on an entirely different level. Over 7k locker & room locations at nearly 500 locations, all accessible at 6¢/hr or less using a single app or keycard. It’s amazing more people don’t talk about this.

Continuous shady sidewalk like this is a real thing of beauty

At a moment when 9 in 10 Americans feel our democracy isn’t working, NYC’s #RankedChoiceVoting primary gave all of us a model of what better elections can look like. FairVote CEO Meredith Sumpter explains.

Crosswalks getting a badly needed refresh/enhancement after students were hit by driver running red light late in the spring semester. After a few e-mails, FDOT promised to repaint before the fall semester started. Nice to see some action here. Now to drop the speed limit by 20 mph.

Enjoying the counter-flow protected cycle tracks in Eugene, Oregon - a gold-level bicycle friendly community via @bikeleague.org The bicycle directional signage is great of out-of-town folks like me. Easy to find my way to paths. Lots of bike parking. Video at double speed.

Conscientious SUV Shopper Just Wants Something That Will Kill Family In Other Car In Case Of Accident theonion.com/conscie...

Better than a famers’ market? Farmers’s Market with bike valet parking! #SaltLateCity

Pleased to see positive changes in bike infrastructure in Salt Lake City. 9-line Trail/cycle track extended east many blocks. Roundabouts and chicanes on the 800E greenway. Curb-protected bike lanes downtown. Ramps from bike lane to path. Bike map hasn’t been updated since 2019. Much to add.

Grocery shopping with my #Brompton folding bike.

The Trump administration has shut down a federal website on climate change, taking down congressionally mandated National Climate Assessment reports and extensive information on how global warming is affecting the country. @coveringclimatenow.org @sciencewriters.org www.latimes.com/environment/...

First visit to Detroit in 8 years. It’s like Amsterdam/Copenhagen bike infrastructure on Livernois between 7 Mile and 8 Mile.