570,000 people took part in 2,300 events in 175 countries today, calling on world leaders to take decisive action on climate change.

It comes ahead of the UN's two-week Climate Change summit in Paris which begins tomorrow.

The UN says this is the first time in 20 years of negotiations that countries will "aim to achieve a legally binding and universal agreement on climate, with the aim of keeping global warming below 2°C".

The events were largely peaceful, however 208 protesters were detained after clashes with police in the French capital, where a national state of emergency remains in place following the terrorist attacks earlier this month. 

Yemeni protesters hold placards during a Global Climate March, that is being held in various cities around the world, a day ahead of the 2015 Paris Climate Change summit, in the old city of Sanaa, Yemen, Sunday, Nov. 29, 2015. (AP Photo/Hani Mohammed)

Protesters struggle with their costumes in the wind as they wait for the march through London calling for ambitious action to tackle climate change to begin in Berlin, Germany, Sunday, Nov. 29, 2015. (Dominic Lipinski / PA Wire)

Campaigners move through Westminster in central London, calling for ambitious action to tackle climate change. (Anthony Devlin / PA Wire)

Activists display banners during the Global Climate March in Jakarta, Indonesia, Sunday, Nov. 29, 2015. (AP Photo/Dita Alangkara)

A protester holding a placard takes part in the Global Climate March, a day ahead of the 2015 Paris Climate Change summit, in Athens, Sunday, Nov. 29, 2015. (AP Photo/Yorgos Karahalis)

Hundreds of pairs of shoes are displayed at the place de la Republique, in Paris, as part of a symbolic and peaceful rally called by the NGO Avaaz "Paris sets off for climate", Sunday, Nov. 29, 2015. (AP Photo/Laurent Cipriani)

Boys look at a hot air balloon of the environmental group Greenpeace, near the Eiffel Tower ahead of the 2015 Paris Climate Conference, in Paris, Saturday, Nov. 28, 2015. (AP Photo/Thibault Camus)

Policemen fight with activists during a protest ahead of the 2015 Paris Climate Conference at the place de la Republique, in Paris, Sunday, Nov. 29, 2015. (AP Photo/Laurent Cipriani)

29/11/2015 Thousands of people joined the Stop Climate Chaos organized march and protest on climate change today in Dublin, joining protests taking place across the world today ahead of the start of the UN Climate Summit in Paris tomorrow. (Mark Stedman/RollingNews)