When it comes to addressing climate change, sometimes it’s the “unworkable” ideas that are the ones we need the most. This episode features technologist-turned-sea-level-rise-provocateur Russ Walsh, who unpacks his audacious “SeaNet”: a globe-spanning lattice of canals and inland seas that would siphon ocean water inland and buy coastal cities time. Many will scoff—it’s too big, too messy, too hard. But with tides already licking at doorsteps and whole nations on the line, dismissing bold thinking is the riskiest move of all. Come for the skepticism; stay for the math, the engineering, and the unexpected upside (“blue gold”) that could turn adaptation into opportunity. If the water’s rising either way, shouldn’t we at least hear Russ out?
