Using cotton-candy machines to produce N95-quality mask-filter material

N95 is a US standard for particulate filtering; a material has to be able to block at least 95% of airborne particles. That material is comparatively expensive, but Mahesh Bandi — a physicist at the OIST Graduate University — has figured out how to make N95-quality stuff out of recycled plastic melted into a goo and spun out using a cotton-candy machine. — Read the rest