Whereas prehistoric man had no exposure to urban lifestyles - the forcing house of intelligence - the evidence

-> Whereas prehistoric man had no exposure to urban lifestyles - the forcing house of intelligence - the evidence

suggests that ants have lived in urban settings for close on a hundrd million years, developing and maintating

-> suggests that ants have lived in urban settings for close on a hundred million years, developing and maintaining

 underground cities of specialised chambers and tunnels. Could you explain the meaning at the right side of

-> underground cities of specialized chambers and tunnels. Could you explain the meaning at the right side of

first sentence? the part " the forcing house of intelligence" I don't get it I may ask you during a class.

-> first sentence? the part " the forcing house of intelligence" I don't get it I may ask you during a class.