A sorta modern day "Protocols of the Elders of Zion"-type plan, (not that it says that the leaders of the world are Jewish) that would use the UN and other world organizations to create a global socialist dystopia. Suppoosedly the big meeting took place in 1992.
It was the policy proposal that came out of the UN conference for environment held at Rio de Janeiro in 1992 (can't remember the exact name - I remember this from a 1st year engineering environmentalism course I did many years ago). What that document covered is essentially the usual "eco-friendly" things like the so-called sustainable development. Don't laugh at that - many of the West's city-level councils take it seriously and most policy recommendations at that level are already reality around the world.