KEEP YOUR COOL: Chris Link of the Southern Appalachian Highlands Conservancy will host a two-part workshop on building an economical mobile walk-in cooler for use on the farm and on the road. Photo ...

That’s how Khosla began inventing cost-effective, energy-saving solutions for small farmers. His first success was a radiant heating system that sits under plant beds and dramatically cuts heating ...

[Charles] wrote in to share the project he just built for the London Hackerspace. He calls it CoolBot, and as the name indicates it’s responsible for keeping the laser cutter from overheating. At its ...