Israeli researchers invent invisible face mask to protect against viruses

JERUSALEM, Nov. 24 (Xinhua) -- Israeli researchers have developed an invisible face mask that protects users from coronavirus, Middle East Respiratory Syndrome (MERS), influenza and other respiratory viruses, the Israel Institute of Technology (Technion) said Thursday.

The new mask is a type of invisible air curtain that flows in front of the user's face and is mounted on a hat visor, arising from a lightweight