Photographer: Akio Kon/Bloomberg

There's Another Son in Japan Trying to Change the World

He's 15 years younger, worth about $12 billion less and has a lower profile.

When a massive tsunami swept away entire towns in northeastern Japan five years ago, Taizo Son filled three shipping containers with emergency supplies and sent them to aid relief efforts. Later, he bet almost $100 million of his own money on startups seeking to transform everything from transportation and education to farming and medicine.

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