 Terry Hurford tells us about a geyser on one of Saturns moons so powerful it puts water into one of Saturn's rings.Dr Terry Hurford, NASA Planetary Geodynamics Laboratory May 2007
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 The eruption of the Laki fission in Iceland in 1783 led to sulphurous smog falling over Europe. It has been described as the biggest atmospheric pollution event in history. John Grattan tells us more...Dr John Grattan, University of Wales, Aberystwyth May 2007
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 Azi Khatiri spoke to Rod Jones about how water molecules pair up into a dimer - and that this can be an even worse greenhouse gas than carbon dioxide...Professor Rod Jones & Alex Shillings, University of Cambridge May 2007
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 Jonathan Shanklin was part of the team from the British Antarctic Survey who first discovered the hole in the ozone layer. Twenty years on, we caught up with him for an update...Jonathan Shanklin, British Antarctic Survey May 2007
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 This week Chelsea and Bob look at water in our atmosphere. Chelsea looks at why some places get too little, while Bob looks into the eye of the storm...Chelsea Wald and Bob Hirshon May 2007
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 Chelsea and Bob look at some of the driest places on Earth, to see what changes are occuring there.Chelsea Wald and Bob Hirshon April 2007
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 Annelise Hagan, of the Living Oceans Foundation talks about her work on Coral reefs and using sea planes to spy on the sea.Annelise Hagan, University of Cambridge April 2007
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 Stan Harpole talking about how using fertilisers can reduce biodiversity by destroying the niches that allow complex inter-species competitionStan Harpole, University of California, Irvine April 2007
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 Rising carbon dioxide levels usually make us think about the atmosphere, but new research shows that carbon dioxide dissolving in the ocean could have devastating effects on shellfish and other marine organisms. Frederic Gazeau from the Netherlands Institute of Technology March 2007
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Steve Scott looks at mining useful mineral from the bottom of the ocean.Professor Steve Scott, University of Toronto January 2007
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One way of reducing the build up of Carbon Doxide is to just hide it underground. We look at carbon capture.Professor Jon Gibbins from Imperial College January 2007
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 Eric Wolff has been studying the ancient atmosphere trapped in an ice core, and how it affects our understanding of the environment.Dr Eric Wolff from the British Antarctic Survey January 2007
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 Ali looks into wind energy, both onshore and offshore along with the new technology of wave power.Alison Hill and Max Carcas January 2007
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 Dr Giulio del Zanna, Mullard Space Science Laboratory December 2006
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Kate Hendry, University of Oxford November 2006
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Dr Jane Francis, University of Leeds November 2006
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Dr Povl Abrahamsen, British Antarctic Survey November 2006
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Chelsea Wald and Bob Hirshon from AAAS, the science society September 2006
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John Law from Weatherquest, UEA September 2006
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Chelsea Wald and Bob Hirshon from AAAS, the science society September 2006
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