We have just launched Ask the Fox, a sandbox site for experimental interaction with the data from and related to the Encyclopedia of World Problems and Human Potential.
The very idea of a sandbox for the Encyclopedia is foxy, and the reason for that has to do with divination — if you can guess why, let us know!
The site has been built using GatsbyJS, an open-source static site generator built on top of Node.js using React and GraphQL.
The main public presentation, maintained by the UIA, can always be found at encyclopedia.uia.org.