Follow the Money.
There were trillions to be made.
Power
This would have empowered the UN
Sovereignty
This would have run roughshod over the Sovereignty of all countries
This scam was planted by someone with tons of money buying scientists and their integrity . Scientists would have received a piss-pot full of money to carry out their ministrations.Whoever it was, waas rich enough to buy Al Gore hook,line, and sinker, or else Al Gore was used because he was an idiot.
That 'someone' is called the Government (US, UK, German -- pick a country) where most science funding now comes from.
Researchers will always attempt to keep the funding flowing, and with government funding, they can only do that by providing the results that the government desires. A "Global Crisis" (pick any crisis)with the blessing of corrupted government funded scientists, gives governments the justification to tax, spend and assume greater powers than they could otherwise. Global Warming, or now 'Climate Change' is the perfect excuse for every level of bureaucracy to cry for more funding and politicians to call for more taxes and control.
President Eisenhower warned about this very thing back in his 1961 farewell address.