Environmental NGOs, or non-governmental organizations, are groups that work to protect the environment and promote sustainable practices. They focus on issues like climate change, wildlife conservation, and pollution control. These organizations often engage in advocacy, education, and research to raise awareness and influence policy decisions. Many environmental NGOs operate at local, national, or international levels, collaborating with communities, governments, and businesses. Some well-known examples include the World Wildlife Fund, Greenpeace, and Sierra Club. Through their efforts, these organizations aim to create a healthier planet for current and future generations.