Entry into force

Intergovernmental agreements, including protocols and amendments, are not legally valid until ratified by a certain number of countries. For the UNFCCC creation, it took 50 countries; as for ratifying the Kyoto Protocol, at least 55 countries were required (together representing 55% of Annex 1 emissions in 1990). The Paris Agreement entered into force after at least 55 Parties to the Convention accounting in total for at least an estimated 55% of the total global greenhouse gas emissions have deposited their instruments of ratification.

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Kyoto Protocol

On December 11, 1997, the Kyoto Protocol was created during the Third Conference of the Parties (COP 3) to the Climate Change Convention, held in Kyoto, Japan. It is a treaty linked to the convention, which defines the responsibilities and obligations of the...

Igarapé

An igarapé is an Amazon watercourse of first or third order, constituted by a long arm of river or channel. It exists in a small number in the Amazon basin, characterized by little depth and running almost inside the forest. Most igarapés have dark waters similar...

Externality

The fact of existing outside the perceiving subject. This economic phenomenon can be categorized as positive or negative when, in the price of the good placed on the market, the social gains and losses resulting from its production or consumption, respectively, are...