Aldo Leopold was an American author, philosopher, scientist, ecologist, and conservationist who is best known for his book "A Sand County Almanac".

The conservation movement, also known as nature conservation, is a political, environmental, and social movement that seeks to manage and protect natural resources, including animal, fungus, and plant species as well as their habitat for the future.

Ecology is the branch of biology that studies the interactions between living organisms and their environment.

Environmentalism, also known as environmental rights, is a social and political ideology focused on the protection of the environment and conservation of natural resources.

The Wikipedia page on "Environmental movement" provides a comprehensive overview of the historical, philosophical, and political aspects of the drive for environmental conservation and sustainability.

Flora is the term used to collectively refer to plant life in a particular region or period.

Oxford University Press (OUP) is the largest university press in the world, and a department of the University of Oxford.

Rachel Carson was an American marine biologist, conservationist, and writer.