As a pioneer in mainstream climate finance, I have spent years trying to understand how and where finance can play a role in more environmentally friendly business solutions. To understand this, an understanding of both science and finance is needed, and consequently it is tough to get a full overview. In a time where we all know that pollution is a challenge, both for city environments and chemical balances in the atmosphere, it is of high importance to identify, understand and list potential solutions. The work done by Dr Lütken to support this process by writing this book is therefore of very high importance and I strongly commend and recommend this book.