When Paris banned cars with even-numbered plates for a day in 2014, pollution dropped by a whopping 30%.
जब पेरिसले २०१४ मा एक दिनका लागि जोर–नम्बरका कारमा प्रतिबन्ध लगायो, प्रदूषण ३० प्रतिशतले कमी भयो ।