pneumatics Unlock the mysteries of pneumatic components with inventor's whimsical & ingenious mechanical clock automaton Bob Knetzger
Boing Boing Gadgets This build-your-own-cat is perfect for the STEM learner in your life Boing Boing's Shop
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security My review of Sandworm: an essential guide to the new, reckless world of "cyberwarfare" Cory Doctorow
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