Make - Volume 71

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Climate change is an urgent threat but if we makers act now, we can still make a difference at both micro and macro levels. Our cover story, the kickoff to a series that will run through 2020, gives a big-picture look at what steps we can take to arrest climate change. Hint: It starts by electrifying everything! Then, we look at some tasty tech with the story of a seriously impressive cheeseburger-making robot, recipes to cook delicious insects, and instructions to build a Raspberry Pi-powered cocktail dispenser for your next BBQ or robot-themed party.Plus, 21 projects to make, including:Hack the Sonos-Ikea Symfonisk to make high-quality, networked bookshelf speakers on a budgetBuild the world's newest, simplest siege weapon, the Walking Arm TrebuchetFold and fly the Guinness World Record paper airplaneMake a jig for quick, easy, and beautiful box jointsOur best-yet DIY coffee bean roasterAnd much more!