philadelphia, katherine commale. >> she's definitely without a doubt an inspiration. >> my goal would be everyone in africa gets a bet net who needs a benet. >> reporter: when katherine at age 5 learned millions of children's lives could be saved with a bed net she came up with a plan. >> here's a bed net certificate, and we decorate them and then we sell them in honor of someone. we usually decorate them with markers, glitter, and like crayons. and then we usually s >> i was bowled over that really here was this young woman who has raised about $150,000 for nothing but nets since she was 5 years old. >> reporter: in the last five years, nothing but nets has distributed more than 3 million bed nets to africa, potentially reducing overall childhood deaths by malaria by 25%. >> it feels good to be a hero. once you send a couple of nets you'll try to keep going and try to change the world. >> and that again was dr. richard besser reporting. we want to remind you to watch the abc news special "be the change, save a life."