Photos: New Yorkers 'Step It Up' at climate change rally

On Saturday, environmental organizations and activist groups nationwide hosted events as part of Step It Up 2007, a day dedicated to drawing national leaders' attention to the need for action on the problem of climate change. In New York City, one of several Step It Up events was the Sea of People, a rally in lower Manhattan's Battery Park and Financial District neighborhoods, which was intended to demonstrate which areas of the city would be under water if sea levels rose 10 feet.