• What is the long-term evolution of untreated ulcerative colitis with just mild symptoms? Does it tend to get worse? Or do people just have bloody stools throughout their lives without anything bad happening beyond that? Because of the mild symptoms these people might not go see the doctor and so these cases go undocumented.


  • Why doesn’t Lisbon’s garbage collection system differentiate between organic waste (i.e. food) and other non-recyclable waste? It all goes to the same bin, at least for individual households (hotels and restaurants have separate bins for each type of waste).