Ever wondered how they fix those cracks in concrete? Magically, overnight, the cracks are fixed and that too with a very high precision. Let us show you how it works and you’d be amazed without any doubt. The fix is; they use foam. The foam fills in the gaps that are created due to cracks and thus imparts a stability to the foundation. This new technology will one day make the leaning tower of Pisa straight again. The process is wonderful and mesmerizing to watch. Check out the video below and let us know what you think of it.