Some of the most effective efforts to preserve the environment have been carried out by

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NGOs (Non-Governmental Organizations) have been at the forefront of many successful environmental preservation efforts, such as the work of Greenpeace to protect oceans and forests, the Wilderness Society's efforts to conserve wilderness areas, and the Sierra Club's advocacy for clean air and water. While the United Nations, the United States, and the World Bank have also taken steps to protect the environment, NGOs have often been the driving force behind specific campaigns and initiatives.

Some of the Most Effective Efforts to Preserve the Environment