1. Help Me Understand: “Why Do Cracks Happen?”

    If you’ve ever walked down a sidewalk, you’ve seen cracks in concrete. In other words: You’ve seen cracks in concrete. Unless your 5-year-old was undertaking a particularly raucous version of “don’t-step-on-a-crack-or-you’ll-break-your-mother’s-back,” however, you probably didn’t pay that much attention to those cracks. What gets us to start paying attention to cracks in the conc…Read More