I use givewell.org to find charities. From their home page: "We search for the charities that save or improve lives the most per dollar." They appear to be pr

I use givewell.org to find charities. From their home page: "We search for the charities that save or improve lives the most per dollar." They appear to be pretty transparent about how they choose charities to recommend. I don't want to misrepresent them, so please check out their site if you want more details.