He helped beat smallpox and saved three million people's sight. Now the first techno-philanthropist has an even more ambitious task. Spending Google's $2 billion.

Some 18,000 children die every day because of hunger and malnutrition and 850 million people go to bed every night with empty stomachs...

"I cannot afford to buy millet in the market, so I have no food, and there is no milk to give my baby," says Fatou, a mother cradling her son Alhassan.

Any day we wish; we can discipline ourselves to change it all. Any day we wish; we can start a new activity. And start the process of life change.

What is social entrepreneurship and who is a social entrepreneur. Are founders of socially beneficial organization the only social entrepreneurs?

Entrepreneurs have many of the same character traits as leaders. Entrepreneurs are often contrasted with managers and administrators...