Following a high-profile Silicon Valley career, Yishan Wong is
fighting climate change by accelerating the pace of
reforestation

Yishan Wong
After two decades in the tech sector, former Reddit CEO Yishan
Wong is building a company based on his favourite climate
technology: trees. "If I were to say to you, 'Hey, I just
invented this self-replicating carbon-extracting machine that only
requires water and sunlight, and it can be operated by anyone,'
you'd be like, 'That's awesome, that's what we need
to address climate change,'" he says. "Well,
that's literally a tree."
Wong helped to build PayPal and then Facebook into globally
dominant forces. He now lives in Hawaii, not far from the parcel of
parched land he bought in 2017 with the inkling of an idea for how
to bring back its native forest; now restoration of that land is
well underway (the process takes many years), it has become part of
the proof-of-concept for his new company, Terraformation.