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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U.S. to dismiss charges against Huawei's Meng Wanzhou

U.S. prosecutors on Thursday asked a judge to dismiss bank fraud and other charges against Meng Wanzhou, the chief financial officer of China's Huawei Technologies whose 2018 arrest strained relations between the U.S. and China.

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