The researchers tested 14 masks to find out which best stopped droplets spreading.
Another US city erupts in violence after police shoot black man dead
Police declare war on rival Sydney crime families
Cold air funnel spotted as wild storms hit southern Queensland
Amy Coney Barrett sworn in as US Supreme Court justice
‘Sexy Lexy’ the Torana reunited with owner after 30-year absence
Milk crate murderer pleads guilty to Sydney CBD stabbing attacks
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