Campaigners will gather in Sheffield on Saturday to raise awareness of climate change issues.
Time for the Climate is being organised in Tudor Square and the nearby Upper Chapel, Norfolk Street, by the Sheffield Climate Alliance, and runs from midday to 4.30pm.
There will be a mass sing at 2pm, followed by a silent vigil.
Other activities will include music from choirs and bands, craft activities, a live debate and a baking competition.
United Nations talks on global warming start in Paris on Monday.