Paris climate talks: So yeah. . .

Associated Press

Everything you need to know about what happened before

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After decades of warnings from scientists that greenhouse gas emissions were warming the planet, governments started coming together in the 1980s to combat the problem. Here’s a timeline of key moments in the diplomatic effort to stop global warming, leading up to the UN climate conference in Paris:

1987: MONTREAL — Governments adopt a treaty pledging to restrict emissions of chemicals damaging the ozone layer. While it doesn’t deal with climate change specifically, the Montreal Protocol becomes a model for how to limit man-made emissions through international agreements.

1988: NEW YORK — The UN General Assembly endorses the creation of the Intergovernmental Panel on Climate Change. It is set up the same year by two UN agencies, the World Meteorological Organisation and the UN Environmental Programme, to assess the existing knowledge about climate change.

1990: LONDON — The IPCC releases its first scientific assessment of climate change. It says greenhouse gas levels in the atmosphere are increasing due to human activity, resulting in warming of the Earth's surface.

1992: RIO DE JANEIRO — World leaders gathering for the first Earth Summit sign the United Nations Framework Convention on Climate Change, the first international treaty aimed at limiting greenhouse gas emissions. However, it sets no binding emissions targets.

1997: KYOTO — The Kyoto Protocol is adopted, setting binding emissions targets for wealthy countries. The United States doesn't join the treaty because it doesn't include big developing countries such as China and India. The US  also says the treaty would harm its economy.

2004: MOSCOW — Russian President Vladimir Putin signs a bill confirming his nation's ratification of the Kyoto Protocol. The move means countries representing more than 55 per cent of global emissions support the treaty, a condition for it to take effect.

2007: OSLO — Former US vice president and climate campaigner Al Gore and the IPCC share the Nobel Peace Prize for their efforts to raise awareness about global warming.

2009: COPENHAGEN — The first attempt to craft a global emissions treaty to replace Kyoto, which is set to expire in 2012, falls apart amid disputes between rich and poor countries over who should do what. Acrimonious negotiations end with a voluntary deal inviting countries to present nonbinding emissions targets for 2020.

2011: DURBAN — Talks produce a major breakthrough as countries sign an agreement on climate change in 2015 that would take effect five years later and apply to all of them.

2013: STOCKHOLM — The IPCC says it's "extremely likely" that human influence is the maint reason for warming temperatures recorded since the mid-20th century.

2015: PARIS — More than 190 governments meet in the French capital to finish what’s envisioned as a landmark deal to rein in greenhouse gas emissions after 2020.