In the last months of 2018, every weekend tens of thousands of people demonstrated on the streets in France. The main reason of the demonstrations was the rising petrol prices and its environmental tax that the government wanted to raise according to the 2014 law. The French example shows that in many cases the measures against the climate change can provoke a very deep resistance from a major part of the society; meanwhile the global climate change became a bigger and bigger danger for humanity. In the first part of my publication, I will shortly examine how the climate change became an important issue globally in the last 20 years; and how environmental pollution and the related climate change have become an important research subject in the economy and the answers the scholars gave for these challenges. In the second part I will show the toolkit the fiscal policy disposes to mitigate the climate change, and finally I will examine why and how the monetary policy and the financial system must be involved in the fight against climate change.