jali landreau was inspired by building practices in his home country he grew up in togo where clay or earth houses are. common sight in many countries in africa cement this. kind of wall inside therefore you need to have ventilation cooling system and stuff like this whereas you don't need something to get. together with his colleague. he's founded a start up there is a shortage of housing all over the world these days the construction industry is under pressure not to waste resources there's a demand for the cement free concrete in industrialized nations but also in countries where affordability is a priority including in parts of africa where millions of new homes need to be built in the upcoming years. we have plans. in terms of. banks who estimate that we need to build houses for 2000000000 people by 10 to 15 and. most of these houses need to be built in country where like that they. don't like their building material costs more down and they let some. therefore having much like cheaper much you know it's really important it's. our dream and. so being able to implement the clothes