It is a New Year but old problems are here to stay. The first day of 2018, began with a spike in pollution levels across Delhi. Pollution levels in National Capital Region have touched hazardous levels again. 'You just cannot expose children and the elderly to such an environment where the air quality index is over 450. This may not have an immediate effect but will leave a long-lasting impact on health', warns Dr A K Kumar, Lung Specialist at Delhi's Sir Gangaram Hospital.