With the arrival of the end of one more year it becomes important to reflect on the goals achieved throughout this year. The meetings that took place along this year encouraged countries to redouble their efforts against global warming and posed the problem as a life-and-death struggle for the survival of the Earth and its inhabitants. “We are losing the battle.” This was the strong statement made about climate change by French President Emmanuel Macron at the One Planet Summit meeting. Truth be told every day trees and plants die, icebergs melt, birds and fish disappear, lands become deserts and many species of insects and other wild animals will be extinct. To reverse this situation, it is essential to combat carbon dioxide emissions, a gas that comes mainly from the use of fossil fuels such as coal or oil. The amount of gas that the world expels into the atmosphere has not stopped growing: since 1960 it has multiplied almost by four and since 2005, the year of the strong implementation of the Kyoto Protocol, has increased by 22%. The main emitters of CO2 remain China; the United States of America; and India. Except for the United States, the remaining CO2-emitting powers are amongst the 197 nations that signed the historic agreement of Paris in 2015. The agreement commits countries to submit proposals and results on the battle against climate change. The development of renewable energies has been noticed, however there is still a way to go.