International Organizations

1. United Nations Environment Programme (UNEP) – Global environmental leadership and policy-making.

2. Intergovernmental Panel on Climate Change (IPCC) – Scientific research and reports on climate change.

3. Greenpeace – Environmental activism and corporate accountability.

4. World Resources Institute (WRI) – Research and solutions for climate sustainability.

5. The Climate Reality Project – Climate education and advocacy founded by Al Gore.

Grassroots & Activist Groups

6. Extinction Rebellion (XR) – Nonviolent direct action for climate policy change.

7. Fridays for Future (FFF) – Youth-led climate strikes inspired by Greta Thunberg.

8. Sunrise Movement – U.S.-based movement for the Green New Deal.

9. 350.org – Fossil fuel divestment and grassroots activism.

10. Friends of the Earth – Global network for environmental justice and climate action.

Conservation & Sustainability Organizations

11. The Nature Conservancy – Land and water conservation for climate resilience.

12. World Wildlife Fund (WWF) – Protecting biodiversity and reducing carbon footprints.

13. Rainforest Alliance – Sustainable agriculture and forest conservation.

14. Ocean Conservancy – Marine protection and ocean health initiatives.

15. Project Drawdown – Identifying the most effective climate solutions.

Corporate & Policy Advocacy Groups