This field is really interesting, and there is a lot of research out there on it. The Global Impact Investing Network (GIIN) is a good starting place, but I’ve spent about a week pulling together stats from several sources to build my view on this space, and the Canadian options in particular.
I do like World Tree in particular, because it both produces high-impact social utility, has a high expected financial return, and I can actually buy-in without being accredited. Unfortunately for people with less than $1M, the options for impact investing are very slim at the moment.
Typical options include Green Bonds with a 4-5% return over 5 years, or investments in smaller community funds with a fairly small impact.
Check out a few Canadian options at OpenImpact