20:30The Internet: The Last 20th-Century BattlegroundEpisode 1BBC Radio 4 Extra Duration: 30 minutes Fri 19th Sep 2014, 20:30 on BBC Radio 4 Extra4 Extra Debut. In 1999, Douglas Adams offered his vision of a digital future with a global explosion in communication from a virtual world.GenresFactualScience & NatureScience & TechnologyFormatsDocumentariesSeriesThe Internet: The Last 20th-Century Battleground Source: BBC Online