(500) https://khn.org/news/article/as-schools-spend-millions-on-air-purifiers-experts-warn-of-overblown-claims-and-harm-to-children/
khn.org
Instead of spending millions on school ionizing air purifiers, sometimes you can just open a window. Great piece in @KHNews today.
Instead of spending millions on school ionizing air purifiers, sometimes you can just open a window. Great piece in @KHNews today.