New Delhi, July 29 -- India, with a median age of around 25 years compared to 40 in China and the US, and 50 in Europe, has the world's largest youth bulge, exceeding 500 million. Although this has positioned the country well to sustain growth, this is not automatic. It needs to be turbocharged to prevent a youth advantage from becoming a demographic disaster. A transition from farm to factory jobs, home ownership and economic security are causes and consequences of investment in human capital....