In Our Time is a BBC Radio 4 podcast that covers the “big ideas” of our age. Each week the host, Melvyn Bragg, and three guests investigate the history of the ideas on a topic and debate their application to modern life. On offer this week is the history of Life on Mars |MP3| here’s the description
“For centuries there has been fierce debate about whether there is life on Mars and from the 19th century it was even thought there might be a system of canals on the planet. This insatiable curiosity has been fuelled by writers like H.G. Wells and C.S. Lewis and countless Sci-Fi films about little green men. So what do we know about Mars – its conditions, now and in the past? What is the evidence that there might be water and thus life on Mars? And when might we expect man to walk on its surface?”
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http://downloads.bbc.co.uk/rmhttp/downloadtrial/radio4/inourtime/rss.xml