# Beaches have long been eroding far too quickly for the Old Earth theory; "between 80 and 90 percent of the sandy beaches along America’s coastlines have been eroding for decades," sometimes by as much as 50 feet per year.<ref>http://www.scientificamerican.com/article.cfm?id=what-causes-beach-erosion</ref> | # Beaches have long been eroding far too quickly for the Old Earth theory; "between 80 and 90 percent of the sandy beaches along America’s coastlines have been eroding for decades," sometimes by as much as 50 feet per year.<ref>http://www.scientificamerican.com/article.cfm?id=what-causes-beach-erosion</ref> |