Dec. 18
More than 1,000 people walk through the streets of Copenhagen on the last day of the UN climate summit.
Jens Dige-AP
Dec. 18
President Barack Obama shakes onlookers by the hands after saying "It's time to go home," as he walks through the press conference room at the Bella Center, where the climate conference took place from Dec. 5-18.
Adrian Dennis-AFP/Getty Images
Dec. 18
Chinese Prime Minister Wen Jiabao, center, walks back to his place after delivering his speech during the plenary session at the climate summit.
Anja Niedringhaus-AP
Dec. 18
Barack Obama announces that world leaders have come to an agreement on the last day of the conference.
Susan Walsh-AP
Dec. 18
Russian President Dmitry Medvedev speaks with US President Barack Obama during a bilateral meeting at the Bella Center in Copenhagen.
Jewel Samad-AFP/Getty Images
Dec. 18
President Barack Obama attends a multi-lateral meeting with Brazilian President Luiz Inacio Lula da Silva (second from the left) and other leaders during the UN climate conference.
Jewel Samad-AFP/Getty Images
Dec. 18
President Obama speaks during a plenary session at the Bella Center in Copenhagen on the 12th day of the COP15 U.N. Climate Change Conference. "We are running short on time," Obama said about taking action to reduce emissions.
Jewel Samad-AFP/Getty Images
Dec. 18
Media watch President Obama addressing a session of the climate conference. Obama told leaders of 193 nations that their collective will to address global warming "hangs in the balance" and urged both developed and developing countries to accept a climate change agreement he acknowledged was far from perfect.
Ints Kalnins-Reuters
Dec. 18
Japan's Prime Minister Yukio Hatoyama addresses a session of the conference. World leaders worked through the early hours to try to beat a Friday deadline for a deal on cutting emissions and helping poor countries cope with the costly impact of global warming.
Bob Strong-Reuters
Dec. 18
Climate change activists shave their heads in protest against the U.N. Climate Change Conference in Copenhagen, Denmark.
Jeff J Mitchell-Getty Images
Dec. 18
Climate change activists protest outside the conference in Copenhagen. World leaders will try to reach agreement on targets for reducing the earth's carbon emissions on the last day of the summit.
Jeff J Mitchell-Getty Images
Dec. 17
France's President Nicolas Sarkozy delivers his speech during the plenary session at the U.N. Conference on Climate Change.
Attila Kisbenedek-AFP/Getty Images
Dec. 17
Finland's President Tarja Halonen (third from right) poses with a group of women leaders holding a sign that says, "Women are agents of CChange" at the Bella Center in Copenhagen, where the international climate summit is taking place.
Andreas Hillergren-AFP/Getty Images
Dec. 17
U.S. Secretary of State Hillary Clinton announced during a press briefing at the climate summit in Copenhagen, that the United States is prepared to join other rich countries in raising $100 billion in yearly climate financing for poor countries by 2020.
Anja Niedringhaus-AP
Dec. 17
Britain's Prime Minister Gordon Brown looks on before his slot to deliver a speech during the plenary session at the Bella Center in Copenhagen.
Adrian Dennis-AFP/Getty Images
Greenpeace activists display banners on the route between Copenhagen's airport and the Bella Center, where more than 120 world leaders are gathering for the climate conference. The banners read "Politicians Talk, Leaders Act."
Christian Aslund-AFP/Getty Images
Dec. 17
Iranian President Mahmoud Ahmadinejad speaks at the conference's plenary session.
Adrian Dennis-AFP/Getty Images
Dec. 17
From left to right: Charles Rangel, Ed Markey, and Henry Waxman, Nancy Pelosi, Steny Hoyer, George Miller and Bart Gordon address a news conference at the UN Climate Change Conference.
Christian Charisius-Reuters
Dec. 17
A boy cleans the snow from a globe in Copenhagen.
Pawel Kopczynski-Reuters
Dec. 17
France's President Nicolas Sarkozy (left) gestures to Germany's Chancellor Angela Merkel during the plenary session at the international climate conference.
Attila Kisbenedek-AFP/Getty Images
Dec. 16
Danish police confront protesters attempting to enter the conference hall of the U.N. Climate Change Conference in Copenhagen.
Christian Charisius-Reuters
Dec. 16
Climate demonstrators march toward the Bella Center, where the U.N. climate summit is taking place. Hundreds of demonstrators marched to the summit venue to show their anger over the slow progress toward a climate deal by world leaders.
Jeff J Mitchell-Getty Images
Dec. 16
Venezuela's President Hugo Chavez speaks at a meeting during the COP15 summit. World leaders arrive in the Danish capital of Copenhagen over the next three days to work toward a pact to fight global warming.
Chris Ratcliffe-Bloomberg
Dec. 16
Delegates listen to speeches during the climate change conference. Some of the participating nation's leaders will attend the last days of the summit.
Peter Macdiarmid-Getty Images
Dec. 16
Protesters attempt to break through police lines outside the Bella Center in Copenhagen.
Jeff J Mitchell-Getty Images
Dec. 16
Protesters with a group called Lobbyists for Profitable Climate Solutions, one holding fake dollar bills, another one holding a sign reading "Stop Global Whining," heckle demonstrators near Bella Center.
Peter Dejong-AP
Dec. 16
Two protesters are removed by U.N. security officials from the main stage of the climate change conference.
Peter Macdiarmid-Getty Images
Dec. 16
Edwead Yan, secretary of environment from Hong Kong, left, gestures during a debate at the climate summit for mayors at the Copenhagen City Hall. Copenhagen Lord Mayor Ritt Bjerregaard and California Gov. Arnold Schwarzenegger listen.
Anders Debel Hansen-AFP/Getty Images
Dec. 16
Police officers stand in line in front of protesters during a demonstration outside the U.N. Climate Change Conference.
Pawel Kopczynski-REUTERS
Dec. 16
Police clash with protesters near the conference venue.
Pawel Kopczynski-Reuters
Dec. 16
Sir Richard Branson, chief executive of Virgin Groups, gestures during a debate at the climate summit for mayors at the Copenhagen City Hall.
Anders Debel Hansen-AFP/Getty Images
Dec. 16
A demonstrator receives help as she suffers the effects of pepper spray while protesters attempt to break through police lines outside the Bella Center.
Jeff J Mitchell-Getty Images
Dec. 16
A police officer wields a baton against a protester on top of a vehicle as another police officer watches near the conference venue.
Pawel Kopczynski-Reuters
Dec. 16
Danish riot police handcuff demonstrators from the group Reclaim the Power during the summit.
Scanpix Denmark-Reuters
Dec. 15
An activist joins demonstrators protesting for "climate justice" in the center of Copenhagen, Denmark.
Anja Niedringhaus-AP
Dec. 15
Nobel Peace Prize Laureate, Kenyan professor Wangari Maathai attends a meeting at the UN Climate Change Conference taking place at the Bella Center in Copenhagen.
Olivier Morin-AFP/Getty Images
Dec. 15
Environmental activists hold a demonstration in Copenhagen as world leaders started arriving at the climate summit, where they are working towards a global agreement.
Jeff J Mitchell-Getty Images
Dec. 15
Archbishop Desmond Tutu jokes with former Irish President Mary Robinson (left) before an Oxfam International climate hearing at the Bella Center.
Attila Kisbenedek-AFP/Getty Images
Dec. 15
People wait to enter the Bella Center to attend the UN Climate Change Conference.
Christian Charisius-REUTERS
Rajendra K. Pachauri, chairman of the Intergovernmental Panel on Climate Change, speaks to youth organizations at the UN-sponsored international climate conference.
Khan Tariq Mikkel-AP
A Greenpeace activist dressed as one of the "Four Horsemen of the Apocalypse" rides along the parliament building during a brief protest in Copenhagen.
Christian Charisius-REUTERS
Dec. 13
Former President Bill Clinton addresses a gathering via video link from New York as delegates look on during Forest Day 3 in the Falconer Convention Center in Copenhagen. Forest Day 3 is an international conference on the world's forests, which focuses on the role of forests in climate.
Casper Christoffersen-AFP/Getty Images
Dec. 13
A protesters walks under a a giant cow model covered with a placard reading "Hungry for climate justice," as she joins a rally in Copenhagen. Protests continued Sunday after hundreds of protesters were arrested Saturday.
Anja Niedringhaus-AP
Dec. 13
A protester holds an umbrella as he stands next to Danish policemen during a rally in Copenhagen.
Anja Niedringhaus-AP
Dec. 13
Protesters are restrained after police disrupted an impromptu demonstration in the northern part of Copenhagen. Several hundred protesters were restrained and taken from the scene near Osterport station.
Adrian Dennis-AFP/Getty Images
Dec. 13
Archbishop Desmond Tutu delivers a speech before handing over a petition signed by 512,894 people to United Nations climate chief Yvo de Boer on a stage in central Copenhagen.
Christian Charisius-Reuters
Dec. 12
Detained demonstrators hoping world leaders attending the UN Climate Change Conference will hear their messages are seen lined up on a street in Copenhagen.
Thibault Camus-AP
Dec. 12
Demonstrators sit on the ground as police surround them at a rally outside the UN Climate Change Conference in Copenhagen.
Christian Charisius-REUTERS
Dec. 12
During a candlelight vigil, Archbishop Desmond Tutu (right) gives a speech with former Irish President Mary Robinson (center) outside the Bella center, where the conference is taking place.
Attila Kisbenedek-AFP/Getty Images
Dec. 12
Climate change demonstrators gather outside Denmark's Parliament building ahead of a climate march in Copenhagen. More than 30,000 participated in the march.
Adrian Dennis-AFP/Getty Images
Dec. 12
Protesters gather to demonstrate outside the UN Climate Change Conference in Copenhagen.
Axel Schmidt-AFP/Getty Images
Dec. 12
A boat with a slogan on its sail tries to attract attendees of the UN Climate Change Conference in Copenhagen. The sail reads: "Climate change is the symptom, capitalism is the crisis".
Christian Charisius-REUTERS
Dec. 12
A protester demands for "climate justice" outside the climate summit, which takes place in Copenhagen from Dec. 7 to 18.
Axel Schmidt-AFP/Getty Images
Dec. 12
People dressed in giant panda suits perform before a march to the United Nations Climate Change Conference.
Bob Strong-REUTERS
Dec. 12
A protester taking part in a demonstration outside the global climate summit holds up a poster demanding action on climate change be taken before it's too late.
Axel Schmidt-AFP/Getty Images
Dec. 11
Children react to a person wearing an inflatable phone outfit with a climate change message in Radhuspladsen in Copenhagen. Security in the city was tightened ahead of demonstrations on the streets over the weekend as the COP15 climate summit continues at the Bella Center on the outskirts of the city.
Adrian Dennis-AFP/Getty Images
Dec. 11
Commuters walk past a "Hopenhagen" logo as they leave the train at Kongens Nytorv metro station ahead of the fifth day of COP15 Climate Conference in Copenhagen.
Attila Kisbenedek-AFP/Getty Images
Dec. 11
Police and demonstrators scuffle during a protest march in central Copenhagen.
Christian Charisius-Reuters
Dec. 11
Delegates talk to each other prior to a plenary session at the U.N. climate summit in Copenhagen, Denmark. Negotiators are working in Brussels and Copenhagen to come up with more climate change money for poor countries amid talks on a historic deal to control the world's greenhouse gases.
Anja Niedringhaus-AP
Dec. 11
U.N. climate chief Yvo de Boer gestures prior to a plenary session at the climate summit in Copenhagen.
Anja Niedringhaus-AP
Dec. 11
Members of Climate Rescue Team perform during a demonstration in Copenhagen in the Bella Center.
Attila Kisbenedek-AFP/Getty Images
Dec. 11
A member of Climate Rescue Team draws messages for the delegation members of UNCCC during their demonstration in the Bella Center.
Attila Kisbenedek-AFP/Getty Images
Dec. 11
A man in a polar bear costume walks around delegates at the U.N. Climate Change Conference in Copenhagen.
Christian Charisius-Reuters
Dec. 10
A globe is placed on a table during the "Klimaforum09" conference in Copenhagen.
Christian Charisius-Reuters
Dec. 10
Members of a U.S. youth group hold a demonstration in their underwear outside the Bella Center in Copenhagen on the fourth day of the United Nations Conference on Climate Change.
Keld Navntoft-AFP/Getty Images
Dec. 10
Stickers dot the floor of the Bella Center, reminding conference attendees to "Reduce Your Carbon Footprint."
Adrian Dennis-AFP/Getty Images
Dec. 10
Chinese participants prepare for their talks in the China information booth at the Bella Center.
Attila Kisbenedek-AFP/Getty Images
Dec. 10
Delegates point to an interactive screen at the climate wall located in the main venue of the climate summit in Copenhagen.
Anja Niedringhaus-AP
Dec. 10
Chilean officials chat prior to a plenary meeting at the climate conference.
Attila Kisbenedek-AFP/Getty Images
Dec. 10
Inside the Bella Center, demonstrators call for global leaders to not kill the Kyoto agreement reached in 2007.
Keld Navntoft-AFP/Getty Images
Dec. 10
A woman poses while being photographed in front of "Digital Sun," a light installation by artist Steven Scott at the Bella Center.
Adrian Dennis-AFP/Getty Images
Dec. 9
Ching-Hiu Chen Dharma Drum Moutain from the Buddhist Association studies Wednesday's schedule for the United Nations Conference on Climate Change in Copenhagen, Denmark.
Scanpix Denmark-Reuters
Dec. 9
Environmental activists from the Danish organization MS ActionAid demonstrate with their banners, reading: "Rich countries pay your climate debt!"
Attila Kisbenedek-AFP/Getty Images
Dec. 9
Participants at the conference walk in front of a display of pictures in the Bella Center, the venue for the 12-day conference.
Attila Kisbenedek-AFP/Getty Images
Dec. 9
Activists hold a demonstration in support of the the South Sea island of Tuvalu as delegates arrive for a meeting.
Bob Strong-Reuters
Participants talk before the start of a plenary meeting.
Bob Strong-Reuters
Dec. 9
An activist from the group Avaaz, dressed as an alien, holds a placard in the main hall.
Bob Strong-Reuters
Dec. 9
Bolivian delegation members listen to questions from journalists during a press conference at the Bella Center in Copenhagen.
Attila Kisbenedek-AFP/Getty Images
Dec. 9
U.S. Environmental Protection Agency Administrator Lisa Jackson, left, is projected on a screen during a briefing in the U.S. Center at the UN Climate summit in Copenhagen. Jackson said she will take common sense steps to regulate carbon emissions to protect the health of Americans.
Anja Niedringhaus-AP
Dec. 8
An activist looks out of a giant tree as he participates in a demonstration at the United Nations climate summit.
Anja Niedringhaus-AP
The main hall at the U.N. climate conference features a large globe.
Bob Strong-Reuters
Dec. 8
On the second day of the conference, Michel Jarraud, secretary-general of the World Meteorological Organization, presents a chart showing that the year 2009 is likely to rank as the warmest on record since the beginning of instrumental climate records in 1850.
Miguel Villagran-Getty Images
Dec. 8
An unidentified delegate from Sierra Leone follows discussions in a nearly empty plenary hall during a working session.
Anja Niedringhaus-AP
Dec. 8
A man watches an animated projection showing the different acidities of the ocean during one of the sessions.
Miguel Villagran-Getty Images
Dec. 7
A video projected on a floating cubicle in the city center shows the United States as the second largest carbon dioxide emitter after China.
Peter Dejong-AP
A card representing industrialized countries is pulled from an envelope to win the "Fossil of the Day" award during a mock presentation organized by The Climate Action Network at the COP15 summit in Copenhagen on December 7, 2009.
Adrian Dennis-AFP/Getty Images
Dec. 7
A young boy runs through the Climate Maze in Copenhagen. The maze, organized by United Nations Environment Programme, consists of hundreds of cloth banners stamped and signed by thousands of campaign supporters from around the world.
Adrian Dennis-AFP/Getty Images
Dec. 7
Sculptures stand in a stretch of water next to the Bella Center, where the conference is taking place in Copenhagen.
Miguel Villagran-Getty Images
Dec. 7
People pose and photograph the COP15 Copenhagen logo at the entrance to the Bella Center. The Danish capital is hosting the fifteenth Session of the Conference of the Parties to the United Nations Framework Convention on Climate Change, a two-week conference to discuss emissions targets and financial measures to combat climate change.
Adrian Dennis-AFP/Getty Images
Dec. 7
Visitors peruse a globe which is a part of of an installation in downtown Copenhagen. About 100 world leaders are to attend the meeting, which is intended to supplant the 1997 Kyoto Protocol.
Pawel Kopczynski-Reuters
Dec. 7
An environmental activist distributes leaflets outside the Bella Center before the opening of the conference.
Pawel Kopczynski-Reuters
Dec. 6
A display on the UN Climate Wall is set up before the conference begins.
Peter Dejong-AP
Dec. 7
Members of a non-profit organization hold up signs indicating their expectations for the conference, known as COP15.
Bob Strong-Reuters
Dec. 7
U.N. climate chief Yvo de Boer, center, receives a gift with a message --"Ten million people want a fair, ambitious and binding climate deal" -- from an activist of the environmental group TckTckTck.
Attila Kisbenedek-AFP/Getty Images
Dec. 7
The landmark conference on tackling climate change opened with negotiators from 192 countries aiming toward a deal to ward off global warming's potentially catastrophic effects.
Keld Navntoft-AFP/Getty Images
Dec. 7
Danish Prime Minister Lars Lokke Rasmussen delivers a speech at the Bella Center during the opening ceremony.
Attila Kisbenedek-AFP/Getty Images
Dec. 7
Environmental activists from World Wide Fund for Nature (WWF) demonstrate in Copenhagen.
Liselotte Sabroe-AFP/Getty Images
Dec. 7
From left to right, Nobel Peace Prize winner Rajendra K. Pachauri, U.N. climate chief Yvo de Boer, Danish Prime Minister Lars Lokke Rasmussen and Mayor of Copenhagen Ritt Bjerregaard attend the opening of the United Nations Climate Change Conference. Pachauri is the chair of the Intergovernmental Panel on Climate Change.
Bob Strong-Reuters
Dec. 7
Members of an environmentalist group pretend to be dead during a protest demanding a "real climate deal" during the first day of the conference.
Miguel Villagran-Getty Images
Dec. 7
Members of the media work in the press area.
Keld Navntoft-AFP/Getty Images
Dec. 7
A postal worker rides her delivery bicycle past a giant poster about climate change in central Copenhagen. The Danish capital is hosting the two-week conference to discuss emissions targets and financial measures to combat climate change.
Adrian Dennis-AFP/Getty Images
Dec. 7
Denmark's Climate Minister Connie Hedegaard delivers a speech at the opening ceremonies. The conference runs through Dec. 18.
Scanpix Denmark-Reuters
Dec. 7
Nobel Peace Prize laureate Wangari Maathai of Kenya, center, sits among representatives as they listen to Danish Prime Minister Lars Lokke Rasmussen's opening speech.
Attila Kisbenedek-AFP/Getty Images
Dec. 7
Members of environmental activist group Act!onaid -- dressed as "climate debt agents" -- stand outside the Bella Center.
Pawel Kopczynski-Reuters
Dec. 7
An Oxfam campaigner stages a simulated flood situation to highlight the impact of climate change on developing countries.
Ainhoa Goma-AFP/Getty Images
Dec. 7
U.N. climate chief Yvo de Boer listens to a journalist's question during his joint press conference with the Danish Climate Minister Connie Hedegard.
Attila Kisbenedek-AFP/Getty Images
Dec. 7
Environmental activists congregate outside the Bella Center.
Pawel Kopczynski-Reuters
Dec. 7
An activist anchors a large balloon -- representing a ton of carbon dioxide -- to the ground outside the conference hall.
Pawel Kopczynski-Reuters
Dec. 7
Delegates are pictured during the opening session of the conference.
Bob Strong-Reuters
Gallery Credits:
Producer, Photo Editor Stephen Cook, Sam Funt
Text Editor Alicia Cypress