going to. we don t have. the space the used. this week our global ideas series takes us to south america. there are reporter tanya bluett set out to discover more about a unique aquatic landscape caused by flooding in northern colombia during the rainy season it s now in need of protection and locals are doing what they can to preserve it. thanks from above it looks like a lake but in fact it s a wetland system known as a sienna. the landscape is actually hilly but during the rainy season overflowing rivers form freshwater meadows transforming it into a swamp. it s