South Korea has introduced a new kind of traffic light – on the ground. These traffic lights are designed for people who walk while looking at their smartphones. The goal is to help “smombie” (smartphone + zombie) users stay safe when crossing roads. Why Ground Traffic Lights? With many people using their phones all the…

China is facing both deforestation and large desert areas, especially in the north. So, scientists decided to turn one problem — desert sand — into a solution. How Do They Make Paper from Sand? The process may sound strange, but it’s real science. Here’s how it works: What Are the Benefits? This new paper has…