The people behind the news headlines: the migrants risking everything boarding flimsy boats to cross the Mediterranean; the inhabitants of a Russian provincial town and what they think of the country's leadership at a time of economic hardship; the families living in Delhi, alarmed by reports that the Indian capital has the worst air quality in the world; the Venezuelans having to queue at the shops for basic goods; and the Ethiopian volunteers who, by hard graft, are bringing change to a region once known for misery and famine