A new low-cost DIY box filter is "highly effective" in clearing the air of hazardous indoor pollutants, according to a study. Filter-based air cleaners have become popular since the COVID-19 pandemic, ...
Paper towels, coffee filters, cloth and other materials can be used for homemade coronavirus face masks during the pandemic. But which are most effective? A study of homemade face masks by ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback