Artist Nickolay Lamm has depicted a number of U.S. cities as they would look under 12 feet of sea-level rise. That projection, based on data from the organization Climate Central, is right in the middle of several new forecasts that report that Antarctic glaciers are beginning to collapse.
Above, Boston Harbor at 12-feet of sea-level rise.
With 12 feet of additional ocean, water rises up the steps to the the Jefferson Memorial.
Liberty Island is mostly submerged in this view of New York Harbor.
Seawater runs through Ocean Drive in Miami, a major thoroughfare in South Beach.
Harvard's campus in Cambridge, Mass.
The Citadel in Charleston, S.C.
At&T Park in San Francisco