«Radio and climate change» is the central theme of today’s global celebrations for Radio Day, a transcendent new communication system.

This edition advocates that broadcasters must prioritise the quality and diversity of information sources, as they play a key role in addressing climate-related issues, the United Nations Educational, Scientific and Cultural Organization (Unesco) stressed.

It is crucial to the climate crisis to reduce greenhouse gas emissions, which must peak this year in order to limit global warming to 1.5°C.

«In a context where climate change impacts differently on territories and communities, radio is positioned as a strategic medium for the dissemination of environmental information and the strengthening of community resilience,» the Unesco report notes.

By 2025, the UN agency said, the role of radio in the fight against climate change is more important than ever, providing a platform for conversations that promote environmental sustainability and inspire action.

The United Nations (UN) General Assembly set this date in 2012 to recognise the relevance of this medium, now considered the most iconic and dynamic.

The main objective of the day is to make radio an interactive medium that encourages debate on a range of issues of concern to the community.

The first radio transmission in history took place on 14 May 1879, by the Italian Guillermo Marconi, based on various investigations by the physicist Heinrich Hertz on the propagation of electromagnetic waves through the air, in 1895 he built a transmitter that covered a distance of two kilometres.