For those unsure of the reference, bednets are arguably one of the most cost-effective ways to make a positive impact in people's lives: https://www.givewell.o

For those unsure of the reference, bednets are arguably one of the most cost-effective ways to make a positive impact in people's lives: https://www.givewell.org/charities/top-charities https://www.givewell.org/charities/top-charities <-- see Against Malaria Foundation