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World unites for global message to leaders at COP21
More than 500,000 people from around the world joined the biggest day of climate change activism in history.
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2015 to be earth's hottest year
Soaring temperatures have been caused by the El Niño weather pattern, which is the strongest on record.
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Keeping leaders away is key to climate talk success - China
More than 160 countries have already submitted their own national pledges, known as INDCs, to the UN.
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Many hurdles to Paris deal on climate change
Almost 200 nations will meet in Paris from 30 November to 11 December for a summit on climate change.
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Global warming has been good to Champagne makers
Scientists say warming must be kept below 2°Celsius by the end of the century to stave off floods.
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Climate change & rising sea levels
Climate change & rising sea levels
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Is 'Game of Thrones' aiding the climate change debate?
Bloggers think the show could be a way to make the threat of climate change vivid.
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US, China sign symbolic emissions plan, play down rivalry
US officials said the commitments would set the tone for a global climate control pact.
