If you could only pick one charity and your goal would be to benefit the entire planet (as in not just helping specific things like animal shelters, poor children, global warming etc.) what would it be?
What charity has the "pareto principle"? What charity is going to do 80% of the work for just 20% of the money? A charity that contributes to the well being of humanity, enviroment, animals, technology...
A "god" charity.