Environmental Movement Timeline By Peter Miao 1949 Leopold writers ‘A Sand County Almanac’ Text & Hoy 1951 UK’s ten National Parks are established Text 1972 First Earth Summit — UN Conference on the Human Environment Text 1975 C.I.T.E.S. Formed by IUCN Text 1979 James Lovelock publishes ‘Gaia — A new look at life on Earth’ and presents the ‘Gaia hypothesis’ Text 1984 Bhopal Disaster Text 1991 Biosphere 2 Biosphere 2 video Jun 3, 1992 U.N. Rio Earth Submit Text 1997 Julia Butterfly Video we watch in class 2005 Kyoto protocol becomes a legal requirement Text