WeForest Founder Bill Liao: A Long Journey to TED

Bill Liao, Founder of WeForest, wants to plant 2 trillion trees by 2020, to halt global warming. He’s made the commitment not to fly again until that goal has been achieved. For a man with over 3 million frequent flyer miles across 5 different programs, that’s no small thing. This is a man who walks his talk. Literally.

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