Caroline Fiennes is one of the few people whose work has appeared in both OK! Magazine and the scientific journal Nature. She founded and directs Giving Evidence, which works to enable charitable giving to be based on sound evidence. A physicist by background, she was an award-winning charity CEO herself, and has advised major donors and foundation in many continents on many issues over many years: they include Eurostar, the Sainsbury Family Charitable Trusts, professional tennis players, and foundations set up by governments in the UK, US and the Gulf. Caroline has taught at Oxford, Cambridge and Yale, and is described by Nobel Prize winner Richard Thaler as “charmingly disruptive”. She writes the ‘How to Give It’ column in the Financial Times Weekend.