Science Greatest mechanical calculating devices of all time Jason Weisberger

mathematics This "Weird Units Calculator" can convert watts into T-Rex bites and lightsabers Thom Dunn

COVID-19 This calculator helps you determine your personal Covid risk Carla Sinclair

gadgets Graphing calculators are "sexy" now Annie Rauwerda

doom How to power your calculator with potatoes so you can play DOOM Thom Dunn

music Japanese railway melodies played on pocket calculators David Pescovitz

calculators Do you have enough toilet paper? Mark Frauenfelder

Disney 'Pirates of Caribbean' theme song on a calculator Xeni Jardin

music Making chiptunes with a calculator Lux Sparks-Pescovitz

sustainability Recycled plastic railway ties have lower carbon footprints Rob Beschizza

local culture Remote desert town's bizarre welcome sign leaves mathematicians scratching their heads Ellsworth Toohey

Culture Tom Whitwell's annual collection of 52 fascinating facts returns, featuring expensive calculators and trademarked scents Mark Frauenfelder

math I can't stop watching this mechanical keyboard attempt to divide by zero Gail Sherman

punk These are the 8-bit punk roots of Green Day's new "Dookie Demastered" Lux Sparks-Pescovitz

Games Tetris on the 1989 Sharp Wizard Rob Beschizza

electronics Far-out commercial for Sharp electronics from 1978 tape of Star Wars Holiday Special (video) David Pescovitz

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Spoken Word with Electronics The Role of Analog Shift Registers in Electronic Music Ethan Persoff

History Sir Clive Sinclair, 1940–2021 Rob Beschizza

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