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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Prince William, like his father, prioritizes the environment

Prince William capped a three-day visit to Boston by meeting with President Joe Biden to share his vision for safeguarding the environment before attending a gala event Friday evening where he sounded an optimistic tone about solving the world's environmental problems through "hope, optimism and urgency."

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