Residents resort to self-help as floods grip India's Chennai

By Rachel Chitra and Alex J. Richardson BENGALURU/NEW DELHI (Reuters) - Tech enthusiasts across India joined hands to help those left stranded by deadly flooding in the southern city of Chennai, using social media to crowd-source information to supply food, top up mobile phone credits and offer refuge. Incessant rainfall in India's fourth most-populous city has cut off more than three million people from basic services and disrupted power supplies, with the authorities under fire for slow relief