The youth-led protests were the latest in a series of international demonstrations known as the Global Climate Strike.
In Warsaw, demonstrators demanded urgent steps to end the use of fossil fuels and reduce greenhouse gas emissions.
They also urged a greater focus on renewable energy.
Environmentalists have appealed to teachers to allow students to skip classes to join the climate strike. Photo: PAP/Marcin Obara
Protesters gathered at Bankowy Square in central Warsaw, from where they set off on a march through the city’s downtown streets.
They carried banners with slogans such as "Enough talking, let’s act!" and "Don't raise the temperature for us,” Poland’s PAP news agency reported.
In a similar protest in late September, demonstrators in Warsaw demanded that the government take urgent steps to reduce carbon dioxide emissions and switch to green energy sources.
(gs/pk)
Source: PAP