Polarized sunglasses can be used for driving and, in fact, can reduce glare from a long, flat surface such as the hood of the car or the road's surface. These specific sunglasses contain a special filter that blocks this type of intense reflected light, reducing glare. You would see fishers wearing them. When light reflects off a reflective surface , the light moves parallel to the reflective surface. In this case the glasses helps move the light waves horizontal which means only vertical moving light waves can get through these glasses. (http://www.exploratorium.edu/snacks/polarized_sunglasses/ )
Earth’s atmosphere is made of different pieces such as different gasses, water vapors, and etc. These pieces changes the path of light, this process Is known as scattering. The light is scattered