The number of times the nation's beaches were closed or posted with warnings because of polluted water jumped last year to its second-highest level in 21 years, in part because of the Gulf of Mexico oil spill and heavy rains that swept pollutants into the ocean at an accelerated rate, according to a report released Wednesday.
The Natural Resources Defense Council found that contamination from oil, urban runoff, and human and animal waste continued to take a toll on beaches across the country in 2010, according to the report.