Asphalt Additive Could Continuously Keep Roads Ice-Free

Scientists from China's Hebei University of Science and Technology have developed an ice-melting additive for asphalt that could remain active for years. New Atlas reports: [The researchers started] out by developing a chloride-free acetate-based salt. Such salts are considerably less environmentally harmful than chlorides, they're less corrosive to steel and other materials, plus they work at lower temperatures. The researchers proceeded to mix the salt with a surfactant, silicon dioxide, sodiu