One billion homes could be created from the world's plastic waste.The Othalo project will create demonstrator homes for Kenya, Cameroon and Senegal.160 million affordable homes are needed in sub-Saharan Africa alone. Using one of the world's problems to solve another is the philosophy behind a Norwegian start-up's mission to develop affordable housing from 100% recycled plastic. Since 1950, more than nine billion tonnes of plastic have been produ...