This weekend rallies will be held in Fort Lauderdale, Delray Beach and other south Florida cities as part of an international day of action to fight global warming.
With world leaders scheduled to gather in Copenhagen in December to work on a new climate-change treaty, the environmental group 350.org has organized more than 3,000 events around the world to press for tough limits on carbon emissions.
Rallies will be held at world landmarks such as the Taj Mahal and Machu Picchu. A screen in New York's Times Square will display some of the events. More than 200 are scheduled in China.
In South Florida, considered among the most vulnerable parts of the United States to the impacts of global warming, organizers say they want to show there's support for the difficult steps that may be necessary to reduce the use of oil, coal and other fossil fuels that emit carbon dioxide, the most important heat-trapping gas.
The events are designed to let world leaders they are expected to take a strong stand on global warming, and also to let President Barack Obama know that he has support.
Participants in the Delray Beach rally will meet at 3 p.m. at Atlantic Dunes Beach Park, where they will form a human wall and hold up icons such as drawings, posters or other materials that show either the consequences of global warming, such as a polar bear on a shrinking ice flow, or the hope for change, such as a wind turbine.
In Fort Lauderdale, they will meet at 10 a.m. in front of the Museum of Science and Discovery on Southwest Second Street and march through downtown carrying signs and banners.