Public Nouns funds experiments in the public goods space.  

Over the past ~2 years, Public Nouns brought a new mechanism to the public good web3 grants ecosystem, by adopting the Nouns mechanism and focusing it on Public Goods funding.

You can learn about the specific types of experiments Public Nouns is funding here:
https://publicnouns.wtf/vote

And you can see details and evaluation of value creation of these experiments here: 
https://gap.karmahq.xyz/public-nouns