LiveScience: More than 80 percent of critical salt marsh habitat around San Francisco Bay will disappear in 100 years due to rising sea levels, according to a detailed, decade-long survey of the area by the U.S. Geological Survey (USGS).
The marshes are the bay's natural buffer against rising seas. Many of the Bay Area's cities and important services, including highways, airports and power lines, lie only a few inches to a few feet above sea level. As long as a marsh accumulates enough sediment to keep pace...