and motor vehicles ki pollution to hadd se ziada hai.. jab croron vehicles daily chaleingay to carbon monoxide barhti hi jayegi.. is se ziada polluting cheez konsi ho sakti hai bhala aur dusri baat ye keh mera kaam bhi pollution and heat emission se related hai zara.. jisme sabse pehli baat to ye hai ke China, India & Pakistan me steel and iron ki production bohat ziada horahi hai.. you wont believe China puri duniya ka sixty percent khaam maal tayar kerta hai lohay(iron) ka.. India is less than 10% and Pakistan less than 3%.. kul mila ker ye aik nahi kafi sare nuclear bomb jitni heat emit kerte hain rozana.. and sonay pe suhaga ye hai ke jab iron/steel kisi ko without casting istemaal kerna hota hai to wo isko forging kerwate hain.. which consumes alot of energy and produces too much heat.. bohat sare tareekay hain inko bhi control kerne ke liye..
but no one is doing anything.. and ye meri life ka dusra saal hai smog ko face kerte huye.. kabhi nahi suna na dekha tha..