4 Israeli inventions that purify the air of Covid-19

(ISRAEL21c) - Remember when pollution was our worst respiratory worry? Now, scientists say airborne virus particles may be the main cause of Covid-19 infections.

In the face of new evidence, the World Health Organization has changed its tune about the virus not being transmitted through air.

"WHO, together with the scientific community, has been actively discussing and evaluating whether SARS-CoV-2 may also spread through aerosols ... particularly in indoor settings with poor ventilation," the agency announced July 9.

Simply improving ventilation isn't always possible or adequate. And although...