Categories
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The following categories exist on the wiki, and may or may not be unused. Also see wanted categories.
- Rainforest (379 members)
- Recycling (160 members)
- Redistricting (32 members)
- Referendums (6 members)
- Renewable Energy (1,120 members)
- Republic of the Congo (2 members)
- Resilience (1,144 members)
- Resolution (0 members)
- Resolutions (674 members)
- Rhode Island (11 members)
- Rice University (8 members)
- Rights of Nature (143 members)
- Risk Management (4 members)
- Rivers (35 members)
- Romania (1 member)
- Rome (2 members)
- Roscosmos (1 member)
- Russian Federation (189 members)
- Rwanda (1 member)
- Saint Kitts and Nevis (19 members)
- Saint Lucia (19 members)
- Saint Vincent and the Grenadines (19 members)
- Samoa (20 members)
- San Francisco (63 members)
- San Marino (1 member)
- Santa Cruz (14 members)
- Santa Fe (18 members)
- Santa Monica (4 members)
- Sao Tome and Principe (19 members)
- Saskatchewan (1 member)
- Saudi Arabia (31 members)
- Savannah (1 member)
- School Districts (57 members)
- Scotland (11 members)
- Sea-Level Rise & Mitigation (847 members)
- Sea-level Rise (627 members)
- Seattle (40 members)
- Seattle Univ (6 members)
- Senegal (1 member)
- Serbia (1 member)
- Seventh Generation Sustainability (410 members)
- Seychelles (19 members)
- Sharing Economy (17 members)
- Sierra Leone (2 members)
- Simple Living (36 members)
- Singapore (21 members)
- Slovakia (1 member)
- Slovenia (1 member)
- Small Island Developing States (20 members)
- Smart Growth (31 members)