Day 1 in Mexico City. Between the altitude and the poor air quality, I needed to take it slow. Fortunately, I was within walking distance of Parque México, and could walk via the Amsterdam circuit paths. So much #urbangreenspace! Also, all cities need tranquility #parks.

No joke: I got angry hate mail today for writing an obituary of a Black woman scientist—because the person felt she did didn’t deserve the recognition. Which just makes me want to share it again: www.nature.com/articles/d41...

Coyotes! On Lake Ontario! (Or at least the portion between the break wall and the beach, near Sunnyside Pavilion.) Video taken on Feb. 1st. #urbanwildlife #Toronto #coyotes #notoff-leashdogs

Timeline cleanse. #bird #birdfeeder #winter #Toronto

I am a climate scientist and this is correct. As the planet warms, storms like the one today are getting stronger… and as the Arctic is warming twice as fast as the mid latitudes, it increases the risk of the “freezer door” swinging open. Technical explanation here: www.pnas.org/doi/10.1073/...

Timeline cleanse. Pancake ice production in Lake Ontario. (Videoed yesterday, when it was a little less stupidly cold.) #ice #pancakeice #Toronto

Nature imitates Larson

I’ve watched this a few times already. The times, they are a changin’. youtu.be/kDMyeGQm3NA?...

Cat wandered in front of the camera during the #aurora long exposure

I was too tired to go anywhere so I stayed home to see if I could see the #Crew11 capsule from the backyard in one opening I have in the trees. It made it and I have photographic evidence but that's about it. Pretty epic to watch even for a few seconds and that thing was hauling ass!

“New ideas must use old buildings” - Jane Jacobs. The 1907 Home Furniture Carpet building on Queen Street East in Toronto will soon be the location of a new public library.

The official explanation they’re apparently going with here is that they aren’t 100% convinced that breathing soot and ozone is actually bad for you.

As a native Pittsburgher, this makes me very sad. (Granted, with today’s other news, it’s small potatoes. But it’s still shitty.) #PittsburghPostGazette

🚨BREAKING: DOJ admits it has only released 12,285 documents required by Epstein Files Transparency Act. More than 2 million documents still need to be reviewed/released. DOJ is in violation of federal law that required release by Dec. 19. More from Democracy Docket in am. www.democracydocket.com

Some people think science is just for nerds, but science is the foundation of the modern world and science is what made America great. Even though many of us don’t work directly in space science, we were inspired to become scientists by NASA. Destroying it makes zero sense.

In 2026, we are taking back our science. You don’t have to love all our tactics, but please trust me when I say @standupforscience.bsky.social is on the right side of history and we will remain so. The original call out remains: GET IN, DORKS! open.substack.com/pub/sciencef...

Not just nyc is having a historic moment today. So many good / encouraging / interesting mayors in the States.

Crazy and brave “dippers” race into the ice water at Toronto’s Sunnyside Beach on New Year’s Day. #PolarBearDip #PolarBearPlunge #Toronto

A few before (early dippers) and one after (late dipper) from the #PolarDip / #PolarPlunge in #Toronto on New Year’s Day 2026. #SunnysideBeach. If anyone knows the guy being interviewed by the TV cameraman, share this pic or DM me! 🥶

You probably heard the US admin is threatening to break up the National Center for Atmospheric Research: but did you know they already froze funding for the 9 regional Climate Science Adaptation Centers? From tracking invasives to helping tribes with drought, here's why the CASCs matter ⬇️

This is sobering. I grew up in the US and can safely say that we do not want for-profit hospitals (or insurance plans). 🤬

“By reading this plaque, you have made a valuable addition to the number of people who have read this plaque” … an important heritage moment on the streets of Toronto (by artist Sarah Lazarovic).

The loss of this bio repository would be a disaster. Hey @invam.bsky.social, how much funding do you need per year to remain fully operational?

In the most recent edition of “How Low Can They Go?”, we have this. Truly terrifying on so many levels. (And, to boot, the building was designed by I.M. Pei.)

I wrote to my representatives @hirono.senate.gov @schatz.bsky.social, and Ed Case to tell them to stop the dismantlement of NCAR. You can do the same with your representatives at this link.

Threatening to dismantle NCAR, our premier weather and climate research institute (apparently) because Colorado refuses to pardon someone accused of tampering with voting machines is a sad example of our current kakistocracy in action… www.nytimes.com/2025...

"The West’s Last Chance - How to Build a New Global Order Before It’s Too Late" | Must-read piece (that overlaps thematically with our recent book #ScienceUnderSiege) by Alexander Stubb, President of Finland, in the latest Foreign Affairs: www.foreignaffairs.com/united-state...

Check it out! Toronto’s Cycling and Pedestrian Projects team is now on Bluesky. That means Toronto City Planning and Toronto Cycling are both here … what more could anyone need?

Ground has been broken at what will be Canada's largest new co-operative housing project in over 30 yrs, with 612 rent-controlled homes. Kennedy Green designed by Henriquez Partners Architects for CreateTO, Civic Developments, Windmill Developments and the Co-Operative Housing Federation of Toronto.

Great culture can save lives. Literally. Amazing letter in today’s @thetimes.com about Tom Stoppard

You know, I'm not sure I ever really read the Pond Rules at our local nature preserve all that closely before

I missed it too. What incredible reporting. #explodingwhaleday

I'll Mannsplain it. Our institutions are weak and easily corrupted because they're mostly run by corruptible old men.

They also say nobody in Canada will ride a bike or use a bike lane in winter. Many liars.

“In May 2025, Scotland’s largest city [Glasgow] reached a milestone that would make any transportation planner in Portland or Montreal do a double take: during the morning rush hour, there were more bicycles than cars traveling along Victoria Road, a major artery…” Via @momentummag.bsky.social

I grew up in the US and have lived in Canada for almost half of my life, but I still can’t get used to having Thanksgiving happen before Halloween. This photo explains the issue pretty accurately. #Halloweenmas

Hey @billgates.bsky.social: When Megyn Kelly's crew is coming to your defense, maybe rethink your choices? www.megynkelly.com/2025/10/29/b...

Gotta say, I was thrilled to hear that @trufelman.bsky.social went to Natick Labs for her latest GEAR episode. My first job was at USARIEM - it’s an amazing place. Thanks for a great episode! (BTW, the ARMY t-shirts I bought 30 yrs ago are still goin’ strong.)

This is heartbreaking & heartwarming in equal measure. The courage and kindness of many of my fellow Americans has been sustaining these past few months. www.nytimes.com/2025/10/28/c...

NOAA retirees “volunteering” including one who is working as an “unpaid intern” in order to help. I would like to never again hear anyone bitch about civil servants’ work ethic tyvm.

The Trump administration on Thursday announced a plan to allow oil and gas drilling in Alaska’s Arctic National Wildlife Refuge, one of the largest remaining tracts of pristine wilderness in the United States. More by @maxinejoselow.bsky.social here:

an FBI official says the alleged NBA gambling ring involves the "Toronto Rangers" (not a real team), which doesn't exactly inspire confidence in the quality of their investigation

More of this, please! www.thestar.com/opinion/cont...

“In Ireland, data centers consume more than 20 percent of the country’s electricity. In Chile, precious aquifers are in danger of depletion. In South Africa, where blackouts have long been routine, data centers are further taxing the national grid.” Gift link: www.nytimes.com/2025/10/20/t...

“Paris is changing. There is a new attitude of green and sustainable ideals that are permeating the City of Light. Mayor Hidalgo has led its urgent and radical greening by introducing initiatives to reduce traffic and projects to reinvent the cityscape in a way that was undreamt of a few years ago.”

In 2006 I had the privilege of being the event photographer for a Jane Goodall talk at the University of Toronto. This is one of my fave shots. She was one of the good ones. (Okay, she was the best of the best.) #JaneGoodall

I get what this article is trying to do but framing improving cyclist and pedestrian safety as their responsibility (instead of the motorists that hit and kill them) annoys me. That being said, I do wear a light clipped to my shirt when walking at night. www.npr.org/2025/09/25/n...

Well this is on my list for my next Boston visit. ❤️❤️❤️

Large flocks of migratory #birds passing east of Edmonton Thursday afternoon. #abstorm @fisherspeaks.bsky.social