In the 1970s it looked like the beloved, 200-year-old Cape Hatteras lighthouse was in danger. The sea was getting closer and threatening to swallow it up. And people were torn over what to do about it -- they could move the lighthouse, or leave it in place and try to defend it against the forces of nature. For the next 30 years, the locals fought an intense political battle over this decision. It’s the kind of battle we can expect to see a lot more of as sea levels rise and threaten coastal communities around the world.