3 ms·
I wonder which schools are getting them. In some areas they're probably counterproductive, in the sense that the air outside might be less safe than the one in
by toyg 5y ago
I wonder which schools are getting them. In some areas they're probably counterproductive, in the sense that the air outside might be less safe than the one in the classroom (without HVAC systems, this will probably be the case in pretty much all major English cities, which is why the government was forced by the courts to do something and mandated the implementation of Clean Air Zones).
- noneeeed 5y agoThe current top comment indicates that the model being used is calibratable (presumably by placing outside to work out the background rates). Of course this assumes that they will be properly calibrated by school staff.