Nature and Youth Sweden (Swedish: Fältbiologerna, literally "The Field Biologists") is a Swedish organisation for youth interested in nature studies and environmental protection started in 1947 associated with the Swedish Society for Nature Conservation. The organisation has around 3,000 members in the ages 6–25 organized in 30 subsections all over Sweden. Leaders sometimes encourage young members to avoid factory farmed food, and young members have been involved in protests. The organisation has published important texts on topics such as forestry preservation.