Climate Summit: the super growth of the giants China and India, the Russian aims and the Brazilian demands. Numbers and contradictions that leaders will have to face

NEW YORK – The virtual summit on the fight against climate change was opened by a commitment from Joe Biden: to cut the carbon emissions of the United States by 50% by the end of this decade, that is, within nine years, compared to the level that these emissions had achieved in 2005. It is almost double what Barack Obama promised when he signed the Paris Accords in 2015.