2 Today there are many different kinds of families around the globe. Some people live in traditional families-that is to say, a stay-at-home mother, a working father own biological children. Others live in two-paycheck families-that is, both parents work outside the home. There are many single-parent families; in other words, only a mother or a father lives with the children. Still others have adoptive or foster families (i.c., adults take care of children not biologically theirs) or blended families-in other words, divorced or widowed men and women marry again and live with the children from their previous, or earlier, marriages. Some kids have stepparents-that is, mothers or fathers related to them by marriage instead of biology. In other families, some youngsters under the age of 18 have to take care of kids-either their own or their younger siblings. In different countries around the world, there are also same-sex partnerships-with or without children-childless marriages, unmarried live-in relationships, communal living groups, and so on.