Protesters from the environmental group Greenpeace claimed a 150-meter-tall smokestack at a Polish power plant Tuesday, vowing to perch there until the government cuts back on coal usage.
The activists hung a banner reading "quit coal, save the climate" on the chimney at the Patnow power plant, near the town of Konin.
Greenpeace is demanding the Polish government agree to European Union efforts to reduce greenhouse gas emissions, which many scientists say is a major cause of global warming.
Poland depends on coal for about 95 percent of its electricity.
While the government agrees more is needed to fight pollution, it is reluctant to phase out coal, fearing it would cripple the economy.
Some information for this report was provided by AFP and AP.