Entrepreneurial Tanzanians are combining the ultra-violet power of the sun, black-painted roofs and plastic water bottles to sterilize their drinking water of cholera, typhoid, dysentery and the like.
Entrepreneurial Tanzanians are combining the ultra-violet power of the sun, black-painted roofs and plastic water bottles to sterilize their drinking water of cholera, typhoid, dysentery and the like.
Join the Conversation