[ad_1] A woman wears a mask to protect herself from air pollution in Paris, January 23, 2017. – GEOFFROY VAN DER HASSELT / AFP The available data are insufficient to prove a …
Read More »For the authorities, their effectiveness is not proven
[ad_1] A woman wears a mask to protect herself from air pollution in Paris, January 23, 2017. – GEOFFROY VAN DER HASSELT / AFP The available data are insufficient to prove a …
Read More »