Global climate conference Cop27 started on Sunday in Egypt's Sharm El Sheikh city.
The conference runs until November 18 and will bring world leaders together to discuss the climate crisis.
The Red Sea resort has been extensively redeveloped by the Egyptian government for the event.
This year, the summit will be focusing on four areas of the climate crisis: mitigation, adaptation, finance and collaboration.
UN Secretary General Antonio Guterres in October said the world faces a “catastrophe”, after a UN report found the world was set for warming of 2.8°C by the end of the 21st century.
“Global and national climate commitments are falling pitifully short,” Mr Guterres said.
The climate has been in the headlines this year amid wildfires, droughts and flooding around the world.
Campaigners say not enough progress has been made since Cop26, which took place last year in Glasgow, Scotland.
That conference resulted in the Glasgow Pact, which committed signatory nations to lower carbon emissions.
While the conference formally begins on Sunday, policy announcements have already been made.
On Friday, the EU said that it will sign a partnership agreement on hydrogen and renewable energy with Egypt during Cop27.
Preparations for Cop27 — in pictures:
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Workers walk past signage promoting this year’s United Nations global summit on climate change, known as COP27, adorns Peace Road, in Sharm el-Sheikh, South Sinai, Egypt. AP Photo -
A 10-lane highway, part of the refurbishing of the city for this year’s United Nations global summit on climate change, known as COP27, in Sharm el-Sheikh, South Sinai, Egypt. AP Photo -
A private yacht cruises in the Red Sea ahead of this year’s United Nations global summit on climate change, known as COP27, in Sharm el-Sheikh, South Sinai, Egypt. AP Photo -
A new hybrid electric bus is parked at an entrance of the conference center complex for this year’s United Nations global summit on climate change, known as COP27, in Sharm el-Sheikh, South Sinai, Egypt. AP Photo -
Guests enter the convention center hosting the COP27 U.N. Climate Summit. AP Photo -
Signs promoting the Cop27 climate summit on Peace Road in Sharm El Sheikh, Egypt. AP -
The entrance to the 'Green Zone' before this year’s Cop. AP -
A cruise ship is docked at the international harbour ahead of this year’s United Nations global summit on climate change, known as COP27, in Sharm el-Sheikh, South Sinai, Egypt. When world leaders, diplomats, campaigners and scientists descend on Sharm el-Sheikh in Egypt for talks on tackling climate change, don't expect them to part the Red Sea or perform other miracles that would make huge steps in curbing global warming. AP Photo -
An advert for Cop27 on Peace Road. -
The Egyptian flag flies in the Old Market of Sharm El Sheikh ahead of the summit. -
A billboard shows Egyptian President Abdel Fattah el-Sissi ahead of this year’s United Nations global summit on climate change, known as COP27, along Peace Road, in Sharm el-Sheikh, South Sinai, Egypt. When world leaders, diplomats, campaigners and scientists descend on Sharm el-Sheikh in Egypt for talks on tackling climate change, don't expect them to part the Red Sea or perform other miracles that would make huge steps in curbing global warming. AP Photo -
A peace sign adorns a concrete barrier that surrounds parts of the city of Sharm el-Sheikh, South Sinai, Egypt. When world leaders, diplomats, campaigners and scientists descend on Sharm el-Sheikh in Egypt for talks on tackling climate change, don't expect them to part the Red Sea or perform other miracles that would make huge steps in curbing global warming. AP Photo -
A new pedestrian promenade, part of the refurbishing of the city for the event.
