3d printing How open source designs and 3D-printing make prosthetics more accessible Thom Dunn

Engineering These cool DIY home hacks can help people with disabilities or other mobility problems. Thom Dunn

useful How to open a can without a can opener Popkin

health Lifehacks from a longevity expert who just died at age 105 Andrea James

rubber bands How to shoot a rubber band twice as fast, twice as far, and much more accurately Mark Frauenfelder

life hacks Guy gives a lifehacks tour of his apartment Mark Frauenfelder