Various attempts I've made to make our world a better place:
During a stint in grad school in late 2010, I held a speaker series introducing English students to working writers:
I had the City of Austin add no parking signs at the intersection of W. North Loop Blvd. and Chesterfield to protect the fire hydrant (in red) and traffic flow.
I run a Tor relay to help make the Tor network faster, more robust against attacks, more stable in case of outages and safer for its users: