In a bid to reduce carbon emission, the Paris agreement was signed by 175 parties (174 states and the European Union) on the first day it was opened for signature.

The Paris Agreement (French: Accord de Paris) is an international treaty on climate change, adopted in 2015. It covers climate change mitigation, adaptation, and finance.

Currently, the agreement is signed by 194 states (As of February 2021) and the European Union has signed the Agreement. 190 states and the EU, representing about 97% of global greenhouse gas emissions, have ratified or acceded to the Agreement, including China and the United States, the countries with the 1st and 2nd largest CO2 emissions among UNFCC members.
The aim of the agreement, as described in Article 2, is to have a stronger response to the danger of climate change; it seeks to enhance the implementation of the United Nations Framework Convention on Climate Change through:

a) Holding the increase in the global average temperature to well below 2 °C above pre-industrial levels and to pursue efforts to limit the temperature increase to 1.5 °C above pre-industrial levels, recognizing that this would significantly reduce the risks and impacts of climate change;

b) Increasing the ability to adapt to the adverse impacts of climate change and foster climate resilience and low greenhouse gas emissions development, in a manner that does not threaten food production;

c) Making finance flows consistent with a pathway towards low greenhouse gas emissions and climate-resilient development.
The Paris Conference birthed the conversation around CoP; The United Nations Climate Change Conferences – yearly conferences held in the framework of the United Nations Framework Convention on Climate Change.