Concrete photo from Shutterstock Sooner or later, even the best sidewalk in the country will develop a crack or two. When this happens, workers are deployed to either fill in the damage or lay down completely new swaths of...
Photo via Shutterstock Cracks are a road’s worst enemy. Once a crack forms, water is able to enter the paved surface, and when it expands and contracts with changes in temperature it destroys the road. A group of scientists...