I want to bring clean water to people who do not have it. What I'm trying to do now is think of ways to build a well-drilling machine that is low-cost so people in rural areas can afford it.— William Kamkwamba
I want to bring clean water to people who do not have it. What I'm trying to do now is think of ways to build a well-drilling machine that is low-cost so people in rural areas can afford it.