Agent of change

Dave Welch on how entrepreneurial problem-solving skills can tackle some of society's biggest challenges

Dave Welch is best known for being the founder and chief innovation officer at Infinera, the optical equipment specialist. But he has a history of involvement in social causes.

In 2012, Welch went to court to fight for the educational rights of children in schools in California, a story covered by newspapers in the US and abroad and featured on the front cover of Time magazine.

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