Aldo Leopold (1887-1948), nacido en Burlington, Iowa, es un referente fundamental del activismo medioambiental. Fue ingeniero forestal, silvicultor, profesor de Biología de la Vida Salvaje y padre de la ecología contemporánea, así como un destacado escritor y ensayista, cuya propuesta para una ética de la tierra se ha convertido en uno de los ejes de la filosofía conservacionista. Además de 'Un año en Sand County', ha publicado multitud de libros y artículos sobre ecología y ética medioambiental.

"Aldo Leopold is one of the mythical figures of contemporary environmentalism. From that time when he was very young, a wolf died in his arms -- and he understood that the disappearance of the wild will bring the end of our world -- until the moment of his death while trying to put out a forest fire, Leopold dedicated all his life to the preservation of nature. He was a forest ranger and teacher, activist and writer, and among his many books, this one that we present to you stands out: an indispensable classic on the same level as Thoreau's 'Walden.' With language as poetic as it is direct, as full of humor as it is wisdom, 'A Sand County Almanac' opens with an emblematic phrase: 'There are those who can live without the wild and those who cannot.' As Leopold himself suggested, this is therefore a book for all those for whom seeing wild geese crossing the sky is more important than watching television."--