Paris is a waste of activists’ time. Still, here’s a timeline of the UN negotiations, fwiw.
Timeline: UN climate negotiations
Marc Hudson, University of Manchester
1988 marked the first mainstream call for climate action from scientists. It’s been a bumpy ride over nearly 30 years to the upcoming UN climate summit in Paris.
To navigate the timeline below, hover your mouse on the right and click on the arrow to move forward (and on the left to move back).
Marc Hudson, PhD Candidate, Sustainable Consumption Institute, University of Manchester
This article was originally published on The Conversation. Read the original article.
manchester climate monthly 
So, you do not think it started in 1968, with the http://www.clubofrome.org/?p=324, which led to the ‘Limits to Growth’ published in 1972. Then in 1983, the meeting of World Commission on Environment and Development (WCED), organised by the United Nations. Which led to the Brundtland Report, officially called ‘Our Common Future’: http://www.dac.dk/en/dac-cities/sustainable-cities/historic-milestones/1987–brundtland-report-our-common-future/. If our politicians had acted on these initiatives back then, we would not be in the dire situation we are in now!