Thoroughly explained here: https://youtu.be/KDwCUAueLUU
What the "man-made global warming crisis" is, is an example of how a corrupt/captured state will overreach and control the people for its own gain through manipulation. Many governments are captured by the now global financial system that has almost unlimited power due to its money printers. It charges interest on money that it prints out of thin air. By leveraging its existing power to steer the governments to spend money it is able to effectively spend printed money (governemnt loans) on itself and then receive interest on that money as a bonus. A positive feedback loop that ends in global domination by the unelected financial system with the national and international central banks at its heart. Even worse is that it's power obtained essentially through fraud - it's all based on lending out something for interest that isn't theirs. It started with them lending out gold that people had given them to safely look after in their vaults.