makers Watch this fantastic "Circle in Circle" optical illusion machine in action David Pescovitz

Kids See how this 3D-printed gear turns clockwise no matter how it's cranked Andrea James

explainers Amazing explainer websites Mark Frauenfelder

Gadgets These moving, 3D wooden mechanical models are as gorgeous as they are crazy cool Boing Boing's Shop

gambling What Steve Forte can do with a pack of cards borders on the unbelievable Ferdinando Buscema

cool These gears aren't spinning. It's an optical illusion. Really. (strobe warning) David Pescovitz

security CIA secretly owned world's top encryption supplier, read enemy and ally messages for decades Xeni Jardin

star wars Own this massive Millennium Falcon bouncy house, or not Rusty Blazenhoff

robots Robot appendage "grows" like a plant David Pescovitz

art Hammacher Schlemmer is selling a $95,000 Hippopotamine Sofa John Struan

video games Gears of War 5 is the most yawningly Gears of War game yet Jason Weisberger

Games Game developers, composer named in sexual assaults Rob Beschizza

Gadgets This levitating turntable plays your records in mid-air Boing Boing's Shop

authoritarianism The latest popular uprising in Hong Kong is fighting to keep Beijing from dragging dissidents to mainland China Cory Doctorow

science fiction Exclusive excerpt of Rudy Rucker's new novel: Million Mile Road Trip Mark Frauenfelder

Technology Drones that save power by hanging like bats and perching like birds David Pescovitz

Gadgets Review units of Samsung's $2000 folding phone are failing after hours of use Rob Beschizza

happy mutants Kickstarting gorgeous mechanical metal models Cory Doctorow

tools Ingenious ruler design unites metric and imperial measurements Rob Beschizza

wasps Man invents wasp vacuum and ends up with box of wasps Rob Beschizza