DIY Air Purifiers for Teachers: Free Designs & Step-by-Step Instructions Online

If you’re a teacher returning to the classroom, you may want some extra COVID protection. Thankfully, some researchers and practitioners have created “a design for an in-room air purifier which can remove a significant amount of COVID-19 virus from the air.”

“The design involves making a ‘box’ out of four 20″ MERV-13 filters (the ‘sides’ of the box), a 20″ box fan (the ‘top’ of the box), and a cardboard (the ‘bottom’ of the box’). Air flows in through the filter sides, removing particulates of the sizes that can transport COVID-19 particles, and then flows out through the fan at the top.” These devices can be built from parts available at Home Depot, Walmart and other big box stores, and assembled in about 30-60 minutes. Total cost runs $70-$200. Find designs and a step-by-step instructions here. And read more about the purifier at NPR.

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Foo Fighters Perform “Back in Black” with AC/DC’s Brian Johnson: When Live Music Returns

At Saturday’s benefit concert, “Vax Live: The Concert to Reunite the World,” the Foo Fighters took the stage and performed “Back in Black” with AC/DC’s Brian Johnson. It’s a tantalizing taste of the world to come, if we all do our part…

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Peanuts Plays Yes’ “Roundabout”

Digital filmmaker Garren Lazar gives us a creative parody video and a badly-needed mental health break. Enjoy.

To watch previous Peanuts parodies of songs by Queen, Lynyrd Skynyrd, Journey & more, click here.

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via LaughingSquid

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Alan Turing Will Be Featured on England’s New £50 Banknote

This week, the Bank of England announced that it will feature Alan Turing on its £50 banknote, thus completing the political rehabilitation of the English mathematician, computer scientist and code breaker. The new note will go into circulation in 2021. Find more at The Guardian.

Would you like to support the mission of Open Culture? Please consider making a donation to our site. It’s hard to rely 100% on ads, and your contributions will help us continue providing the best free cultural and educational materials to learners everywhere.

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Bryan Cranston Narrates the Landing on Omaha Beach on the 75th Anniversary of the D-Day Invasion

75 years ago today, the Allies launched the D-Day invasion in Normandy, which marked a critical turning point in World War II–the beginning of the freeing of Europe from Nazi control. Above, actor Bryan Cranston commemorates the anniversary by reading a letter that Pfc. Dominick “Dom” Bart sent to his wife. A 32-year-old infantryman, Bart took part in the harrowing first wave of the massive amphibious assault. Below, we also hear Cranston reading the words of Pfc. Jim “Pee Wee” Martin, describing “his first taste of battle as a paratrooper in the D-Day invasion.” As Cranston reads, you can watch “never-before-seen restored high-resolution 4K footage from Omaha Beach.”

Would you like to support the mission of Open Culture? Please consider making a donation to our site. It’s hard to rely 100% on ads, and your contributions will help us continue providing the best free cultural and educational materials to learners everywhere.

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Free Audio: Bryan Cranston, Breaking Bad Star, Reads First Chapter of The Things They Carried

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The Who and Jimmy Fallon Sing “Won’t Get Fooled Again” with Classroom Instruments

Don’t miss the very end. And don’t miss The Who on tour this summer

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Download the ModulAir, a Free Polyphonic Synthesizer, and Make Your Own Electronic Sounds

Over the years, we’ve talked a fair share about electronic music–from the earliest days of the genre, through contemporary times. Now, we give you a chance to make your own electronic sounds.

According to Synthopia, a portal devoted to electronic music, “Full Bucket Music has released ModulAir 1.0 – a free polyphonic modular synthesizer for Mac & Windows.” (For the uninitiated, a polyphonic synthesizer–versus a monophonic one–can play multiple notes at once.) The ModulAir “is a modular polyphonic software synthesizer for Microsoft Windows (VST) and Apple macOS (VST/AU), written in native C++ code for high performance and low CPU consumption.” Watch a demo above, and download it here.

via Synthopia

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The Lighter Side of Stephen Hawking: The Physicist Cracks Jokes and a Smile with John Oliver

In our tribute to Stephen Hawking earlier today, we discussed the intellectual legacy of the departed physicist, paying particular attention to his groundbreaking work on black holes. The video above is a bit lighter. It just lets you watch Hawking in a comedic exchange with his compatriot John Oliver. If I’m not mistaken, around the 3:46 mark, you can even see him crack a smile. Enjoy.

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Open Culture was founded by Dan Colman.