Who here likes hernias? How about just a good old-fashioned groin pull while trying to lift the trunk of that dead pine tree into the truck bed? Well we feel the same way, and quickly realized it was ...

An M.I.T. graduate student has invented a hand-held gadget that lets you climb up and down walls like Batman. Called the Powered Rope Ascender, it's a spiraling, battery-powered winch that winds its ...