"The efficient fight against global warming is only possible with a responsible collective response, which overrides self-interest and certain behaviors, and develops freely without political and economic pressures," the pontiff said in the letter released by the Holy See press office on Thursday.
He called for a response that could overcome an attitude of dishonesty and promote a culture of solidarity, meeting and dialogue, and is able to demonstrate the responsibility needed to protect the planet and humanity.
"The climate change we are experiencing now serves to remind the international community of the seriousness of inaction, and there is a clear and definite imperative to change," the Pope stated.
Pope Francis expressed his encouragement of the work being done and sent his sincerest wishes that the Lima Conference, as well as conferences that follow, is full of qualities such as respect, justice and action.
The United Nations Climate Change Conference is currently taking place in Lima and is set to end on Friday. It is the 20th annual conference in the series, with the main goal being a reduction in greenhouse gas emissions.