The oldest lady of the house takes care of the youngest child. She usually does this all day, while the people of that house are at work. Cooking, cleaning, and taking care of the youngest children is a normal and typical day's work for her. They call her Maa, which means "mother" in Thai. On the banks of a polluted river, in poorly-built houses, live more than a hundred people from the Lahu tribe. They live in a slum in Chiang Mai, Thailand, away from the Lahu people’s original way of life. Usually, the Lahu people get their resources from the forest. The slum has been there for decades.