Pam and Mjumbe Poe talk about "appropriate technology," the recent International Network on Appropriate Technology conference (INAT, which does *not* have a silly gnat mascot, unfortunately). They also talk about students (young adult humans) and cities and get into participatory budgeting a bit, which seems pretty neat.
Apartheid Mapping: https://www.dair-institute.org/spatial-apartheid-mapping/
INAT: https://www.appropriatetech.net/
Mjumbe's handle across the web: mjumbewu