Scientists know how to cure many of the ills plaguing the high seas -- that is, ocean waters farther than 200 nautical miles from shore, beyond the jurisdiction of nations.
Greensboro, North Carolina, is the first Southern city to give citizens direct control over a slice of public spending, and hopefully it won't be the last.
Sarah van Gelder is cofounder of YES! Magazine. Follow her Edge of Change Road Trip here, and connect with her on Twitter: @sarahvangelder.