This DIY air purifier costs far less than a HEPA purifier, and studies say it works

The Corsi-Rosenthal Box is a DIY air purifier. Some are making theirs kid-friendly by adding unique design elements, while others are getting creative in how to transport them from office to class. (left: @roofeo24 on Twitter, right: James Andrew Smith) The Corsi-Rosenthal Box is a DIY air purifier. Some are making theirs kid-friendly by adding unique design elements, while others are getting creative in how to transport them from office to class. (left: @roofeo24 on Twitter, right: James Andrew Smith)

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Auger-Aliassime, Shapovalov give Canada 1st Davis Cup title

Canada won its first Davis Cup title on Sunday, beating Australia behind victories from Denis Shapovalov and Felix Auger-Aliassime. Montreal's Auger-Aliassime beat Australia's Alex de Minaur 6-4, 6-3 on Sunday to clinch Canada's first Davis Cup championship. Shapovalov, from Richmond Hill, Ont., won Canada's first singles match -- 6-2, 6-4 over Thanasi Kokkinakis -- on Sunday.

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