cassio taniguchi, a second-generation japanese brazilian came up with this project when he was city official. >> translator: the respect the japanese have for nature and for their neighbors is great. i want to let people in brazil follow their example. >> reporter: so when locals saw japanese collecting trash at the games, taniguchi says it was easy for curitiba citizens to do the same. >> translator: the spectators can drop their rubbish, but they can also pick it up afterwards so the stadium is cleaner. >> translator: if people in other parts of brazil also follow this example and do the same sort of thing, it would be wonderful. >> reporter: residents have something to be proud of. they were working hard to keep their community clean and they hope that people in other parts of brazil will also start to stash their trash. gabriela yussa, nhk world. >>> a wet day here in tokyo and much of japan. robert speta joins us with details on how long the rain will last. >> yes, through the next 48 hours the precipitation is going to continue to linger through much of tokyo. look at the satellite ima