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A Halloween prank turns deadly, a new downtown roadway, fire on the mountain and more were reported on this day in Johnson City history.

The Type of Material and Fabric Layer Amount in COVID-19 Masks Matter Written by AZoMApr 5 2021 A new study by researchers from the Georgia Institute of Technology has found that wearing a face mask can safeguard a person and others from COVID-19, but the kind of material and how many fabric layers are utilized can considerably influence the risk of exposure. Graduate student Taekyu Joo setting up the filtration efficiency measurement system. Image Credit: Fobang Liu, Georgia University of Technology. The study quantified the submicron particles’ filtration efficiency of passing through a ...