GLOBAL WARMING PROTESTS

Demonstrators block the entrance of Chevron Corp. in San Ramon, Calif., on Dec. 7 to coincide with the climate talks.

This globe is part of the "Cool Globes" art installation on display in Copenhagen during the climate talks.

Global actions to lobby for curbing greenhouse gas emissions include this rally by children, some dressed as trees, in Sidon, Lebanon, on Dec. 8.

Mankind's reliance on fossil fuels, including these commuters in Taipei, Taiwan, on Dec. 7, is tied to the sharp increase in CO2 since the start of the industrial age.

An activist outside the climate summit in Copenhagen on Dec. 8 makes a point about Europe not retreating from its aggressive targets for CO2 emissions reductions.

Emissions-producing diesel trucks and cars pass non-polluting windmills that stand along the I-10 freeway near Banning, Calif., on Dec. 8. Sustained global warming shows no sign of letting up, according to a new analysis by the World Meteorological Organization and made public at the climate talks in Copenhagen. Although global temperature fluctuates from year to year, overall the decade of the 2000s is likely the warmest in the last 150 years covered by the report. This decade is warmer than the 1990s which were warmer than the 1980s, and so on. The conclusions are in line with independent analysis by the National Climatic Data Center and NASA.

Members of environmental activist group Greenpeace unfurl a banner from Rome's Colosseum on Dec. 9.

A woman walks past one of the dozens of exhibits at the climate summit on Dec. 10.

Activists dressed as aliens on Dec. 10 roam the halls where the U.N. climate summit is being held.

In New Delhi, India, activists on Dec. 10 prepare to release sky lanterns to express their hopes for the climate conference.

More than 600 people were detained as night fell in Copenhagen on Dec.

Climate activists taking part in a mass rally in Copenhagen on Dec. 12 hug a police officer standing guard.

Activists dressed as polar bears stage a protest at the U.N. Climate Summit in Copenhagen.

People get ready before the start of a 'Climate No Borders' march together with several hundred protesters in Copenhagen.

A member of Greenpeace demonstrates during a 'Climate No Border' protest in Copenhagen on Dec. 14. The activist is dressed as 'Death', one of the Four Horsemen of the Apocalypse.

Former U.S. Vice President Al Gore speaks at a presentation Dec. 14 on melting Arctic ice at the U.N. Climate Change Conference in Copenhagen.

Climate activists shout slogans during a march in Copenhagen on Dec. 14.

Several hundred protesters march during a climate protest in Copenhagen on Dec. 14.

Riot police clash with climate activists in Copenhagen on Dec. 14. Between Dec. 12 and 14, police arrested nearly 1,300 activists.

In Copenhagen, Denmark, climate activists have held daily rallies, including this one on Dec. 15. Copenhagen is the host city for the U.N. Climate Change Conference.

Greepeace activists scale Australia's Sydney Opera House on Dec. 15 to make a climate statement urging nations to reach a treaty agreement. The activists were later arrested and charged with trespassing.

An officer wipes his eyes after police used pepper spray against protesters on Dec. 16.

A Danish riot policeman clubs an activist who climbed on top of the car

A police officer uses his baton on activists trying to get into the U.N. talks on Dec. 16.

A demonstrator hit by pepper spray receives help outside the U.N. talks on Dec. 16. Hundreds of climate demonstrators marched to the summit venue to show their anger over the slow progress being made by nations towards a climate deal.

Danish riot police push back protestors outside the venue of the U.N. Climate Conference in Copenhagen on Dec. 16.

Protestors with a group called Lobbyists for Profitable Climate Solutions, one holding fake dollar bills, another holding a sign reading "Stop Global Whining," heckle other demonstrators near the venue of the U.N. climate talks in Copenhagen on Dec. 16.

A German climate activist cries as her hair is cut outside the venue of the Climate Summit in Copenhagen, Denmark on Friday.