Earth First! (A Terra primeiro!), é un movemento ecoloxista radical que emerxeu no suroeste dos Estados Unidos en 1979. Diversos medios de comunicación e outros colectivos afirman que o grupo é unha organización ecoterrorista.[1][2][3][4][5]
Existen grupos de Earth First! nos Estados Unidos, Reino Unido, Canadá, Australia, Países Baixos, Bélxica, Filipinas, República Checa, India, México, Francia, Alemaña, Nova Zelandia, Polonia, Nixeria, Eslovaquia, Irlanda, Italia e España.[6]
- Davis, John, ed. The Earth First! Reader: Ten Years of Radical Environmentalism (1991) (ISBN 0-87905-387-9)
- Foreman, Dave. Confessions of an Eco-Warrior (1991) (ISBN 0-517-88058-X)
- Foreman, Dave. Ecodefense: A Field Guide to Monkeywrenching (1985) (ISBN 0-9637751-0-3)
- Manes, Christopher. Green Rage: Radical Environmentalism and the Unmaking of Civilization (1990) (ISBN 0-316-54532-5)
- Scarce, Rik. Eco-Warriors: Understanding the Radical Environmental Movement (2006) (ISBN 1-59874-028-8)
- Zakin, Susan. Coyotes and Town Dogs: Earth First! and the Environmental Movement (1993) (ISBN 0-8165-2185-9)
- Bari, Judi. Timber Wars (1994) (ISBN 1-56751-026-4)
- Lee, Martha. Earth First!: Environmental Apocalypse (1995) (ISBN 0-8156-0365-7)
- Scarce, Rik. Eco-Warriors: Understanding the Radical Environmental Movement (2006) (ISBN 1-59874-028-8)
- Wall, Derek Earth First and the Anti-Roads Movement (1999) (ISBN 0-415-19064-9)
- Chadwick, Paul "Concrete: Think Like A Mountain"
- King, Elli (Editor) LISTEN: The Story of the People at Taku Wakan Tipi and the Reroute of Highway 55 or The Minnehaha Free State (2006)