Fig. 1. Given (a) the scanned face model of a subject, we develop an optimization-based approach to design (b&c) a PAP mask cushion that fits the face model. (d) The designed mask cushion is ...

Katie covered all things how-to at CNET, with a focus on Social Security and notable events. When she's not writing, she enjoys playing in golf scrambles, practicing yoga and spending time on the lake ...

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Don’t go out without a mask, we’re urged. Our reporter tried making a few designs, and learned that how you treat your mask is important as well. WHYY reporter Sabrina Emms, wearing a mask made from a ...