Going green or environmentalism is a social movement that seeks to influence the political process by lobbying, activism, and education in order to protect natural resources and ecosystems.

An environmentalist is a person who may speak out about our natural environment and the sustainable management of its resources through changes in public policy or individual behavior by supporting practices such as not being wasteful. In various ways (for example, grassroots activism and protests), environmentalists and environmental organizations seek to give the natural world a stronger voice in human affairs.