David Elfstrom 🍁

David Elfstrom 🍁

@davidelfstrom.bsky.social

P.Eng, Energy management, measurement & verification. Toronto, Canada. Born 327ppm CO2. Climate Action & electrification; Safer infrastructure; cycling; air filtration & ventilation

11,030 Followers 1,386 Following 3,239 Posts Joined May 2023
7 hours ago
Preview
The fleeting saving from permanent time In the short term, B.C.’s switch to permanent daylight saving time will be popular. The pains will take longer to manifest

Gift article!

Globe editorial on why Standard Time, not Daylight Time, is best for BC. I am not looking forward to Pacific Darkness Time in November this year.

www.theglobeandmail.com/gift/f39d95c...

16 11 4 1
7 hours ago

The article didn't even mention that standard time wasn't an option. So of course Daylight Time won.
Also, many people probably think Daylight Savings occurs in the winter, when it's actually the opposite.

9 0 0 0
10 hours ago

Motornormativity, that's why.

0 0 0 0
1 day ago

Neighbor told me that seeing me bike to work last week inspired her to start riding again!
🚲 It's like the opposite of the broken window theory. Ride, and others will join! #BikeTO

30 3 0 0
3 days ago
YouTube
This Simple Change to The Law Makes Roads Safer for Everyone. YouTube video by AverageManOnaBike

Presumed liability would be a welcome change to reflect the inherent responsibility of those with the upper hand in physics

6 0 1 1
4 days ago
Wastewater virus signals for Toronto, for the 52 week period ending Friday March 6 2026 showing a drastic spike in COVID-19. RSV, Flu A and Flu B are also shown. The second highest spike was Flu A which peaked mid-December and was present for about 8 weeks, while COVID-19 has been at elevated and mostly growing levels since last spring.

"There's something going around"
Yeah. It's COVID.
wwater.ca/Ontario/Toro...

88 37 1 0
6 days ago
Adopting permanent daylight saving time ‘Spring forward’ on March 8 will be the last time change, ending twice-yearly clock changes

In the news release BC Gov put out announcing the switch to permanent daylight savings time, they cite a Stanford Medicine report to back up their decision, but the report actually says the opposite, that permanent standard time is better

news.gov.bc.ca/releases/202...

51 21 2 2
1 week ago

...which is bananas when you think of it

1 0 1 0
1 week ago

Bus service is far less comfortable but more reliable for Toronto-Ottawa

2 0 1 0
1 week ago

Universal Basic Income would result in an explosion of creative works and enhance culture

51 21 2 2
1 week ago
T. Ryan Gregory @tryangregory.bsky.social‬:

Carney: "Canada supports the United States acting to prevent Iran from obtaining a nuclear weapon and to prevent its regime from further threatening international peace and security."

Canadians: "No we f*cking do not!"

The polling after this will be interesting for sure.

‪Kamala Harris‬ @kamalaharris.com‬ :
Donald Trump is dragging the United States into a war the American people do not want. Let me be clear: I am opposed to a regime-change war in Iran, and our troops are being put in harm’s way for the sake of Trump’s war of choice.

Interesting timeline order here:

6 2 0 0
1 week ago

All over LinkedIn. Reasonable ideas fluffed up with that same cadence and lacking all personality, and when the poster replies to a comment without the LLM assistant using their own voice it's much better. People need to have confidence in their own capabilities.

3 0 1 0
1 week ago

One of the two has been part of a potato cartel charged with conspiring to raise frozen potato prices

0 0 1 0
1 week ago

I would formally like to apologize to the clown community for my emotional outburst that errantly equated the current administration as clowns.

Clowns are clearly superior, and the current administration is clearly deficient.

I will strive to do better.

96 2 3 0
1 week ago

Hard-hitting quote -- “I guess I just don’t have the right barometer to deal with this kind of capricious hate.”

8 3 0 0
1 week ago

I made it up, please use it!

1 0 0 0
1 week ago

Rather, they have invented a digital ouroborosloposaur

6 0 1 0
1 week ago

Except it's also up against the wall 😀

2 0 0 0
1 week ago

There's also the one that's like the first one with narrow spaces for a front wheel only, but horizontal on the ground with no frame locking ability. Basically a display rack for thieves.

8 0 2 0
1 week ago
Preview
Airborne Act Reintroduced Two House members, a Democrat and a Republican, revived a bill that was also considered in previous sessions.

US #IAQ advocates: bipartisan Airborne Act 2026 bill H.R. 7460 reintroduced. Endorsed by ASHRAE, provides tax credits for IAQ assessments and upgrades.

6 6 0 0
2 weeks ago

Smart!

3 0 0 0
2 weeks ago
Preview
Field Review: nanoDUST AirPN10 — The Next Generation of Nanoparticle Monitoring The landscape of air quality monitoring is shifting. For years, the focus remained on PM2.5 and PM10 (mass concentration), but we are increasingly realizing that the most dangerous threats are the ones we can’t weigh. Ultrafine particles (UFPs), or nanoparticles, are so small they penetrate deep into the bloodstream, yet they often escape traditional sensors and regulatory implementations. Enter the…

Field Review: nanoDUST AirPN10 — The Next Generation of Nanoparticle Monitoring

The landscape of air quality monitoring is shifting. For years, the focus remained on PM2.5 and PM10 (mass concentration), but we are increasingly realizing that the most dangerous threats are the ones we can’t weigh.…

3 2 1 0
3 weeks ago
Tabby cat with heart shape marking on his chest, wearing a burgundy bow tie. Image annotated with a red pen outline of the marking

Feb 14 #caturday from this gentlecat who wears his heart on his chest

162 10 3 2
1 month ago
YouTube
Beastie Boys | So What’cha Want | Muppets Version YouTube video by isthishowyougoviral

The YT algorithm brought me this delight from 11 years ago. Perfect editing

6 1 0 0
1 month ago

fraggle rock implies the existence of fraggle jazz and fraggle rap

1,436 247 140 70
1 month ago
Preview
a cat with a serious look on its face and the words ooohhh written below it Alt: Cat from Puss and Boots animated movie that holds a paw up to its mouth and says "Ooohhh" for any dis.
1 0 0 0
1 month ago

Tricksy little earthpigs, my precious!

3 1 0 0
1 month ago

A decade ago there was a Shopify account selling great TTC merch, some celebratory and some satiric. It was quickly shut down. bsky.app/profile/davi...

2 0 1 0
1 month ago

Thank you, College St is my commute! I've been taking the subway instead of college streetcar because so many vehicles keep parking over the rails.

3 0 0 0
1 month ago

On-street parking on Bloor St. has been clear of snow for six days while snow makes the bike lane unusable. Excess snow should be dumped in the on-street parking spots. Prioritize movement of people, not storage of private property on a public road.

38 7 2 1