New Delhi, July 9 -- It isn't clear if they knew about Walter White. But the comparisons are inevitable. A 35-year-old chemistry teacher at a private school in Sri Ganganagar, Rajasthan, and a 25-year-old science teacher in a government school in the same city, were arrested for manufacturing mephedrone in an apartment that served as a clandestine laboratory, the Narcotics Control Bureau(NCB) said on Monday . Mephedrone (4-Methylmethcathinone), also known as MD, is a synthetic stimulant drug in the cathinone family. Walter White is a high school chemistry teacher who turns to manufacturing meth after being diagnosed with lung cancer in the hit serial Breaking Bad.P5...