Mumbai, Jan. 17 -- The Tata Mumbai Marathon (TMM) 2020 will see its 14,000 participants supporting more social causes, as the number of NGOs has gone up to 291, from 272 last year. According to the organisers, while there are 12 main causes, the same as last year, the list of sub-groups under them has become longer, although the exact number is not yet known. A total of 55,000 people have registered for the run....