Overview: What happens when climate and nature become investment objects? Billions are made by depleting nature, but making money from protecting nature is still difficult. Yet that seems to be changing. In the world of Green Capital, the environment is no longer just a matter of ethics, but also of returns. With carbon farmer Sjoerd Miedema, emissions trader Wouter Alblas, former Wall Street whiz kid Zack Knight and European Central Bank board member Frank Elderson.