In BBC Inside Science, Adam Rutherford and guests illuminate the mysteries and challenge the controversies behind the science that's changing our world.
On this week's programme:
Mission to Venus: This week's announcement of the discovery of eight planets lying within the habitable zones of their stars has again raised the prospect of an Earth like planet existing outside our solar system, But if we're to understand how "earth like" these exoplanets really are, we need to gain vital clues from earth's "evil twin" Venus, argues environmental engineer Richard Ghail. Adam Rutherford hears about his proposed new mission to Venus - a planet orbiter to examine the surface and atmosphere that will allow us to understand why Venus has evolved so differently from earth despite their apparent sisterlike characteristics
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Listen to Inside Science
Tune in to BBC Radio 4 on Thursday 8 January at 16:30 to listen to this week's programme. More information and a link to listen again later will be available from the BBC's Inside Science pages.