By Katty Kay BBC News, Washington
When Court Stevenson looks out on the Chesapeake Bay, he sees far more water and far less land than he used to.
We've lost 30,000 acres right here," says Mr Stevenson, an environmental scientist who has been studying the bay since the early 1970s.
The impact of global warming is hard to ignore - rising sea levels are contributing to massive erosion, threatening Maryland's 3,000 miles of coastline.
Aboard a charter fishing boat in early January, we did not have other boat traffic to worry about.
Mr Stevenson took us out to James Island, which is now three islands, or patches of land.
The rising water has covered what was once a thriving community - 150 years ago there were two schools, a shop and a shipbuilding yard.
Mr Stevenson said it will all be gone in 30 years.
"Americans have to change their energy consumption habits," he concludes.
Read on.. http://news.bbc.co.uk/2/hi/americas/7857206.stm