Let's suppose you need to measure the mass of some water, and you want to construct a scale to do it. But you are in a normal house filled with normal stuff. There’s no fancy scientific equipment. Can ...

Add Yahoo as a preferred source to see more of our stories on Google. Paper Clip Hack 1: Fix a Broken Zipper If the pull-tab has broken off of the zipper on one of your bags or pieces of clothing, a ...