(Hello Africa) Young Tanzanian entrepreneur recycles hair into fertilizer
When David Dennis first noticed hair scattered in his high school barber shop, he had no idea that those discarded strands would one day place him at the forefront of a booming green innovation movement.
DAR ES SALAAM, Jan. 18 (Xinhua) -- When David Dennis first noticed hair scattered in his high school barber shop, he had no idea that those discarded strands would one day place him at the forefr