meltdown What Ken Thompson's seminal (terrifying!) "On Trusting Trust" tells us about the Spectre and Meltdown bugs Cory Doctorow

recursion It's Games of Life all the way down Rob Beschizza

metal covers Leo Moracchioli covers Led Zepp Jason Weisberger

recursion Trippy recursive effects Andrea James

twitter A recursive tweet that links to itself Clive Thompson

recursion Amazing in-camera patterns with a video feedback kinetic sculpture Andrea James

math Trippy demonstration of recursively rotating images Andrea James

manners Four Persian drivers arrive simultaneously at an intersection Rob Beschizza

Delightful Creatures Watch 2 cats watch a cat run across football field mid-game Xeni Jardin

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

art MandalaGaba, a drawing board for creating recursive, symmetrical, tessellating art Rob Beschizza

Funny A recursive plaque honoring the installation of a plaque honoring the installation of a plaque honoring the installation of… Cory Doctorow

happy mutants Independent study guide to logic for philosophers and mathematicians Cory Doctorow

tumblr Before Tumblr switched off access to NSFW blogs, it blocked archivists who were trying to preserve them Cory Doctorow

machine learning Tumblr's porn filter blocked Tumblr's images illustrating what Tumblr's porn filter won't block Cory Doctorow

Business Verizon writes down its Yahoo/AOL assets by $4.6 billion Cory Doctorow

Funny Redundant clock Andrea James

privacy Happy Data Privacy Day! A turning point for anonymity, privacy, and the tools that deliver them Gabriella Coleman

Trump is a human void Rob Beschizza

Science Stephen Wolfram's "A New Kind of Science" goes open-access Cory Doctorow