As a N145 per-litre petrol has the same calorific value of energy with a N90 per-standard cubic metre of Compressed Natural Gas (CNG), Ejiofor Alike suggests that the federal government should boost the usage of gas as a vehicular fuel to save foreign exchange used in massive importation of petrol A recent statistics by the World Health Organisation (WHO) revealed rising levels of air pollution in many of the world’s poorest cities, with more than 80 per cent of people living in urban areas exposed to air quality levels that exceed WHO limits. According to WHO’s latest urban air quality database, 98 per cent of cities in low- and middle income countries with more than 100,000 inhabitants do not meet WHO air quality guidelines. However, in high-income countries, that percentage decreases to 56 per cent. The world body also made a startling revelation that as urban air quality declines, […]