The American Association for the Advancement of Science (AAAS) is an American international non-profit organization with the stated mission of promoting cooperation among scientists, defending scientific freedom, encouraging scientific responsibility, and supporting scientific education and science outreach for the betterment of all humanity.

Conservation biology is the study of the conservation of nature and of Earth's biodiversity with the aim of protecting species, their habitats, and ecosystems from excessive rates of extinction and the erosion of biotic interactions.

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.

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.

Environmental protection is an important field that encompasses various measures and initiatives undertaken to safeguard the natural environment from harm or degradation caused by human activities.

The Wikipedia page on the United States provides a comprehensive overview of the country.