The 2019 United Nations Climate Change Conference, also known as COP25, was the 25th United Nations Climate Change conference. It was held in Madrid, Spain, from 2 to 13 December 2019 under the presidency of the Chilean government. The conference incorporated the 25th Conference of the Parties to the United Nations Framework Convention on Climate Change (UNFCCC), the 15th meeting of the parties to the Kyoto Protocol (CMP15), and the second meeting of the parties to the Paris Agreement (CMA2).

Prelude

The conference was planned to be held in Brazil in November 2019, but a year before the planned start, newly-elected President Jair Bolsonaro withdrew the offer to host the event, citing economic reasons. Then Chile stepped up and became the new host, but massive protests against social inequality in the lead-up to the meeting forced it late October 2019 to withdraw from hosting. Then by mutual agreement between the UN, Chile, and Spain, the latter became the new host.

2019 United Nations Climate Change Conference

Various climate activists had set out from Europe to South America by sailboat, before the decision had been taken to relocate COP25 to Madrid. In mid-November, some of these activists joined an alternative conference, the "Forest COP", near the centre of the Amazon jungle, in Terra do Meio. The event was attended by indigenous leaders, scientists and academics such as Eduardo Góes Neves, and activists such as Nadezhda Tolokonnikova. After the Forest COP, a follow-on event, "Amazônia Centro do Mundo" (Amazon: The Centre of the World) took place on 17 November in nearby Altamira.

2019 United Nations Climate Change Conference

Event planning

In November, Teresa Ribera, the Spanish Minister for the Ecological Transition, announced the conference would be held at the IFEMA facilities in Madrid. The Spanish government divided the COP25 into two zones, one blue and one green. The blue zone hosted sessions for negotiation between the parties of the COP. This included the 15th session of the Meeting of the Parties to the Kyoto Protocol and the 2nd session of the Meeting of the Parties to the Paris Agreement. The blue zone also hosted events and activities run by NGO actors and side events organized by states other than Spain. The green zone was dedicated to civil society initiatives aiming to promote social participation. This area was divided into three thematic sub-zones: one involving youth events, the second designated to indigenous peoples, and the third focused on science and innovation. The green zone was intended to be an open-dialogue pavilion for all types of civil actors, ranging from NGOs to businesses, academia and sponsors.

2019 United Nations Climate Change Conference

The event was supported among others by Iberdrola, Endesa, Santander, Suez, Telefonica, Fundación Abertis, Banco Bilbao Vizcaya Argentaria, Acciona and Indra.

Participants

Harjeet Singh, of environmental group ActionAid International, said that moving the summit from Chile to Spain with only four weeks' notice presented "real barriers to participation" for delegates from the southern hemisphere.

In August 2019, youth climate change activist Greta Thunberg and her father Svante sailed from Plymouth, England across the Atlantic Ocean to the Americas in sailboat Malizia II to participate in the UN Climate Action Summit in New York City in September. At that time it was not clear how she was going to return to Europe, but she was planning to go on to Chile for the conference. With the move of the conference to Madrid, the need to return to Europe became more urgent. Teresa Ribera, as Spain's environment minister, offered her help in finding a way to travel to the conference. Riley Whitelum and his wife, Elayna Carausu, two Australians who had been sailing around the world aboard their catamaran, La Vagabonde, took Thunberg back across the Atlantic. On 13 November 2019, Thunberg set sail from Hampton, Virginia for Lisbon, Portugal. Her departing message was the same as it has been since she began her activism: "My message to the Americans is the same as to everyone – that is to unite behind the science and to act on the science."

Speaker of the US House of Representatives Nancy Pelosi led a 15-member Congressional delegation to the talks to demonstrate continued U.S. support for the negotiations, despite the Trump administration's decision to pull the U.S. out of the Paris Agreement.