I'd get in touch with Givewell, and make sure that adequate funding goes to the charities that are very important but too small for me to research myself. If y

I'd get in touch with Givewell, and make sure that adequate funding goes to the charities that are very important but too small for me to research myself. If you have billions of dollars, you can try funding one really big thing, which might fail - or you can fund a thousand smaller things, some of which will fail and some of which will succeed. The latter is usually better for the world.