Here’s a fun project that would make a perfect parent-child activity for a rainy afternoon. Use a 45-degree PVC elbow for a four-inch inside diameter (ID) pipe. The clock shown here actually has two ...

This article was taken from the November 2014 issue of WIRED magazine. Be the first to read WIRED's articles in print before they're posted online, and get your hands on loads of additional content by ...

OK, this is potentially a dumb question. On the outside of my house there are a couple of pvc pipes coming out. They have a 90° elbow attached to them and point at the ground. What are they for? There ...