An interesting article in the New York Times : "Philanthropists Weigh the Returns of Doing Good".
Extracts :
[...]
There is certainly a lot of interest in impact investing — essentially investing money in an organization, either profit-making or nonprofit, with the expectation that it will generate a social benefit and perhaps a financial return.
[...]
Melissa A. Berman, president and chief executive of Rockefeller Philanthropy Advisors, said that [..] impact investing needed to be seen in the right context.