With pollution being one of the main threats in our cities, people are coming up with genius ways to tackle it. A new mural in Poland’s capital, for example, is helping people in Warsaw to breathe a little easier. How, one might ask? All thanks to a special kind of paint, two talented Polish artists, and a studio that helped them to bring their vision to life. The initiative of environmentally friendly murals is organized by the sportswear company Converse as part of their Ci