2050; year; CO2; zero; emission; Z; achieve; carbon dioxide; black smoke; discharge; rise; exhaust pipe; clean; air; pollution; quality; control; future; success; strategy; climate; action; timeline; policy; decarbonize; measurement; clock; exact; time; deadline; save; earth; environment; sustainability; vector; illustration; concept; outline; flat; graphic; design; icon; sign; symbol; abstract; typographic; background; isolated; element; word –