Salva , who has been a teacher in Jujuy for 20 years , says the environmental issues are n't recent ones . Teacher in Argentina A youth group to help clean up the city . About 150 people take part , including about 80 children . On an average Saturday , they often collect about 60 bags of trash for recycling . Children help carry the thousands of bags down from the mountains .
Teacher in Argentina A youth group to help clean up the city . About 150 people take part , including about 80 children . On an average Saturday , they often collect about 60 bags of trash for recycling . Children help carry the thousands of bags down from the mountains .