National Geographic Society Grants:

*Smart Cities: Funding - up to $150K over 1-2 years (overhead allowed)

*Changing Polar Systems: Funding - up to $150K over 1-2 years (overhead allowed)

*Reducing Marine Plastic Pollution: Funding – typically ~$50K (No overhead)

*Documenting Human Migrations - Funding – typically ~$30K (No overhead)

*More: Big Cats Conservation, Long-Distance Animal Migration, Reducing Demand for Illegal Wildlife, Uncovering Human Origins in Asia and Africa  

https://www.nationalgeographic.org/grants/what-we-fund/rfp/