Aldo Leopold's "A Sand County Almanac" inspired an entire generation of environmentalists! He developed a "land ethic" that became the foundation for the environmental movement. - this is true for all natural resources and why must are depleting
One of the penalties of an ecological education is that one lives alone in a world of wounds. Much of the damage inflicted on land is quite invisible to laymen. An ecologist must either harden his shell and make believe that the consequences of science are none of his business, or he must be the doctor who sees the marks of death in a community that believes itself well and does not want to be told otherwise. Aldo Leopold
Tread Lightly- This poster is telling people to be more considerate of the environment we live in. the image is a metaphore for our environmental footprint. it is a set of footprints with a graphic representing the environment as the footprint.