„If the US is the country that most contributes with greenhouse gases, in the world, it should assume more responsibility to reduce emissions.“

— Luiz Inácio Lula da Silva

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„For generations, we have assumed that the efforts of mankind would leave the fundamental equilibrium of the world's systems and atmosphere stable. But it is possible that with all these enormous changes (population, agricultural, use of fossil fuels) concentrated into such a short period of time, we have unwittingly begun a massive experiment with the system of this planet itself…the increase in the greenhouse gases…has led some to fear that we are creating a global heat trap which could lead to climatic instability.“
— Margaret Thatcher
„Canada declares national #ClimateEmergency. It’s great that more countries and regions are doing this. But remember:The fossil fuels must stay in the ground. Forget “climate neutral” and clever accounting. Our emissions must start their way to zero. Now.“
— Greta Thunberg
„Because what it turns out is, is that if a -- the best way for a country to reduce its debt is to grow really fast, and to generate more income.“
— Barack Obama