Since its origins, radio has been shown to be the most useful medium of social communication for humanity. Radio waves go beyond borders and freely reach everybody and everywhere, being a very affordable receiver compared to other forms of media. Throughout history there have been many technical and content contributions that have allowed the development of the Radio for the benefit of society.
Now, in the 21st century, the UN have attributed a day - World Radio Day - to celebrate radio as a medium; to improve international cooperation between broadcasters; and to encourage major networks and community radio alike to promote access to information, freedom of expression and gender equality over the airwaves.
Here is a special message from the Director General of UNESCO, Irina Bokova on World Radio Day 2014: