frfrom eieight african n countries arae learnining here how w to take oe challelenge of africica's enors growowth. christian: we are trying to understand the reaeal problems ththat we are facing andotot jt brsing o ovestatistitil data and d saying we neneed x amounf hohousin but d dig down deep ad ununderstand what thatouousing means for residentof africa. what does african city or africaurbaban living meaean? whwhat does african mean >> for most africans, urban vingng stilleansns euring slslum conditioions. benimana sayththere's a needed r this new generation ofof africn designers toto come up with solutions. chriiaian: basicallyly, it's a strong belief in me thate hahave a very rare chanan in n th country and on this contininento do things s right at thihis particular moment. >> c can africa ririse to that challelenge? christian n benimanandnd othes are trying to make it happen. >> urban planning is a huge challenge. how many cities can the climate cope with? and what about human health? according the u.n.n. air , pollution now contributes to the deaths of 4 million people a year. so how canan