The Ontario government is shutting the Science Centre today citing an engineer’s report – which does *not* say the place must close or that all work is urgent. What a betrayal.

Here's my months-long investigation into Enbridge's influence in Ontario for The Narwhal & The Local Magazine. It shows Enbridge is fighting the inevitable shift away from fossil fuels by doubling down on natural gas at the local level. thenarwhal.ca/ontario-enbrid…

MERV-13 filters reduced the estimated probability of infection by 42% compared to the MERV-8 filter in public transit vehicles tandfonline.com/doi/full/10.10…

What explains that some countries see a lot of heat pumps being installed whereas others lag behind? Key factor is the 'spark gap' - the ration of electricity to gas prices. I plotted heat pump sales per 1,000 households in 2023 against the spark gap. See the correlation?

All aboard the #Caturday train!

Summer floods are here, and following tradition Doug addresses the seasonal weather event using undersized tools for the task

Evening walk on Kitchen Road, #Norfolk County, Ontario, Canada GPS 42.755753,-80.270531

Joel Nakamura Maarten De Cock Within a single LTC there is an A/B wing with poor air quality (~25% of rooms meet standards) and a C wing with good IAQ (65% of rooms to std). In the bad IAQ wing almost everyone got sick. In the good IAQ wing almost nobody got sick. IAQ matters a lot because covid is airborne.

The BMJ study is thus like an RCT of a bulletproof vest with a known 70% bullet penetration rate, which was allowed past the ethics committee despite vests with a 1-2% bullet penetration rate being readily available. It should never have been published.

This article is an excellent summary of the whole issue of #ventilation. All public health & infection prevention professionals should read this. All health care workers. Everybody.

In this simulation the pulsing of higher CO2 over heavily forested areas is nightly respiration from vegetation. This can be logged with a CO2 meter. During the day photosynthesis draws down CO2. The rainforests really are the lungs of the planet, on a daily cycle.

That's. Not. How. Safety. Works. 🤬🤬🤬 When the petrochem plant I worked at as student had 365 days with zero incidents, that achievement was celebrated, BUT NOT BY REMOVING SAFETY MEASURES. x.com/AndrewHewat/st…

Huge paper exploring the relationship between exhalation aerosol counts and CO2 has just been published. Take home message: CO2 and aerosol strongly correlate in silence. Vocalisation causes this relationship to breakdown (way more aerosol than CO2). pubs.acs.org/doi/10.1021/ac…

It's good to be back after five years away. Toronto is definitely home.