...shouted, signaling the driver to start dumping. Two days later our little mailbox was still firmly planted, but the steel support post was twisted like a corkscrew and the door was facing backward. "We're dealing with demon spirits," I said...

...conducted guardrail tests at the Texas Transportation Institute, a state agency in College Station. For example, steel support posts can be replaced with wooden posts and steel blocks can be replaced with wooden blocks, which are thicker and do...