India, with its large annual birth cohort of 25 million, is followed by Pakistan and Indonesia - 1.2 million each, and Ethiopia 1.1 million, it said, adding that the situation is "critical" in low and middle-income countries.
The report says that because of the impact of climate, families across Bangladesh, a low-lying delta nation crisscrossed by more than 130 rivers, have migrated to big cities from villages after losing their livelihoods to increasing salinity in arable land, flooding, or river bank erosion.
The Indian Express had Wednesday reported that the boy had been cleaning the washroom and loading and unloading water canisters during the event, attended by UNICEF’s India representative, NCERT’s national director, cricketer Sachin Tendulkar and hundreds of children.
"The prime minister invested political time and effort and what it meant was people began picking up that story. They want to do it for Mahatma Gandhi, for their country and they felt pride in it," UNICEF Exec Director Henrietta Fore said.