Gas boilers now biggest source of air pollution in central London, study shows

https://www.ianvisits.co.uk/articles/gas-boilers-now-biggest-source-of-air-pollution-in-central-london-study-shows-80417/

Have you ever wondered what a CO2 sensor looks like inside? I've got you covered...
This is a SCD41 from the latest batch. The fab x-rays the boards to check for any solder defects under the sensor.

#CRFoundationUK on X wrote:

New hospital study: air purifiers cut airborne COVID by 98%.
Rooms with HEPA ventilation had zero virus detected.
Clean air is essential public health infrastructure — not a luxury.
Study: https://sciencedirect.com/science/article/pii/S0021850225000643
#CorsiRosenthal #CleanAir #PublicHealth

America Is Backsliding Toward Its Most Polluted Era

https://www.theatlantic.com/health/archive/2025/04/air-pollution-trump-administration/682361/

Advocacy opportunity Pre-register to present directly to BC gov about YOUR priorities for the next provincial budget! Registration deadline April 11 at 2pm: https://www.leg.bc.ca/parliamentary-business/committees/annual-fgs-budget-consultation (Presenting can be done virtually; they’ll follow up in May about whether you’ve been selected. Additional written input options will open in June.)

Our last budget campaign resulted in several key commitments, including over $3 billion for COVID supports: https://donoharmbc.ca/bc-budget-2024-analysis/ But there’s still far more to be done - so if you want things like #CleanAir, #LongCovid care, or ongoing vaccine access including #Novavax, this is a great chance to speak directly to policy-makers!

Here in #DC to tell the fascist vandals of America, #HandsOff our #democracy, #RuleOfLaw, #CleanAir, #CleanWater, #CleanEnergy, #SocialSecurity, #HealthCare, #science, and #VulnerableCommunities.

Air pollution kills millions every year – where does it come from?

https://ourworldindata.org/air-pollution-sources

Every child has the right to a safe, clean and healthy environment. Unfortunately our most vulnerable, children living in poverty, children in low- and middle income communities and countries and children in frontlines communities bear the heaviest burden from air pollution. #CleanAir @OurKidsClimate @parents4future_se @erzbistumberlin @DSBKonsistorium @parents4future @Berlin4Future @Aiti @christianrebellion @christians4future @c4f_hh @teachers4fde @Healthforfuture

If anyone wants to know what the US looked like before our current air quality regulations, watch any American TV series or movie from the 1970s.

LA's air is so visible in The Rockford Files, for example, I'm surprised the writers didn't name it as a character.

Here's the 20" #CorsiRosenthalBox I'm working on. Fans in rectangular housings basically don't exist in the UK, so I made a cardboard shim out of the box for this circular one.

This build was a proof of concept (hence the green masking tape rather than duct tape, and the plastic sheeting still on the #MERV13 filter boards). I was testing whether the shim and the boards would support the weight of the fan. Despite being a mock up it's surprisingly rigid!

Next stage involves building it properly (including sealing those gaps at the corners; the 20" fan is actually more like 21.5" across and the boards are 19.5"), then using my anemometer to measure the flow rate of the finished box, so I can work out what size room it can filter. I'm intending this one for a local community centre where a Queer Club meets, to make their meetings safer.

How to Cool the Planet | Sailesh Rao. Animal agriculture and its impact on Earth.
What is the one thing most of us can do today about #ClimateChange? https://www.planetcritical.com/p/how-to-cool-the-planet-sailesh-rao

Animal Agriculture Exceptionalism | Kenny Torrella. The industry which legalised cruelty. Big Oil has a Big Brother — animal agriculture. https://www.planetcritical.com/p/animal-agriculture-exceptionalism

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Five years ago today, the WHO declared COVID-19 a pandemic. Since then, much of the world has moved on—but COVID hasn’t disappeared.

People are still getting sick, hospitals still see surges, and Long COVID continues to disrupt lives. The good news? We still have the power to protect ourselves and our communities.

Read our latest blog on why prevention still matters: https://whn.global/five-years-since-covid-was-declared-a-pandemic/