Costa Rica’s new president, Carlos Alvarado, made the announcement to crowds during his inauguration on Wednesday

The new president of Costa Rica has announced a plan to ban fossil fuels and become the first fully decarbonised country in the world. Carlos Alvarado, a former journalist, told a crowd of thousands during his inauguration speech on Wednesday this week: “Decarbonisation is the great task of our generation and Costa Rica must be one of the first countries in the world to accomplish it, if not the first.”

He added: “We have the titanic and beautiful task of abolishing the use of fossil fuels in our economy to make way for the use of clean and renewable energies.”

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Alvarado explained that the country will begin to implement a plan to end fossil fuel use in transport by 2021,…