Step It Up NYC 2007

clipped from www.boston.com Global warming protests begin Saturday Participants with the "Sea of People" project march down the street in Lower Manhattan during the Step It Up 2007 rally, Saturday, April 14, 2007 in New York. Americans worried about global warming staged a nationwide day of protests on Saturday, raising their voices everywhere from ski slopes to the Manhattan shoreline. More than 1,300 events were organized in every state under the banner Step It Up 2007 _ a call for Congress to require an 80 percent cut in carbon dioxide emissions by 2050. (AP Photo/Dima Gavrysh Scientists say melting polar ice caps and glaciers will cause ocean levels to rise, although estimates vary. The Intergovernmental Panel on Climate Change has projected that ocean levels will rise 7 to 23 inches this century, but other scientists warn the sea level could rise 10 feet or more, enough to flood Lower Manhattan and other low-lying coastal areas.