National Wildlife Federation

National Wildlife Federation is America's premier nonprofit conservation organization. Its mission statement is to protect wildlife for our children's future. As the largest grassroots conservation organization in the country, the NWF boasts more than 4 million supporters and 47 state affiliates. Their magazines include National Wildlife Magazine (adults); Ranger Rick (children ages 7-12); Ranger Rick Jr. (children ages 4-7); and Wild Baby Animals (toddlers).