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31st Aug 2008
Science of the Seas
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In a round up of interviews from around the world, we seek the science of the sea! We find out how human actions affect the oceans, how a coral calendar could tell us millions of years of climate history, and how female hormones in the water can feminise fish. We also find out how marine micro-organisms affect the atmosphere, and how the humble garden pond could fight climate change. All this and in Kitchen Science, Ben and Dave have a unique tea party, to ask 'how useless is a chocolate teapot?'
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Questions
Is the Rhesus positive blood group dominant?
You were discussing the A,B,O blood group system a little while ago and explained that A and B dominate type O. What about the Rhesus blood group system? Is there a dominant one for that?
Kitchen Science
You have heard the saying, but it is meaningless unless you know exactly how useful a chocolate teapot actually is. We try to find out how thick the walls of a chocolate teapot would have to be to let you brew tea...
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Interviews
Deep water corals, just like their relatives on the reefs, are an indication of a healthy ecosystem - but they also act as a coral climate calender, locking away millions of years of Earth's history. They're being studied as part of TRACES, the TRans Atlantic Coral Ecosystem Study......
Human activities affect the marine environment in different ways, and Kimberly Selkoe and colleagues at the University of Hawaii have been able to develop a map to show where our activities are having the biggest influence...
Trawl fishing involved hauling a net behind a boat, and is extremely good for catching large numbers of fish. However, it can cause huge damage to the sea bed, which can take centuries to repair...
Chris talks to Karen Kidd from the University of New Brunswick in Canada about a study that investigated the consequences to fish of high levels of female hormones getting into lakes and rivers...
David Karl from the University of Hawaii talks to Meera about the problems we face as climate change threatens ocean microorganisms
Kat dives into the possibility that ponds could help us fight the greenhouse effect, with Professor John Downing and Jeremy Biggs
Meera dons a penguin costume to meet with Tilo Burghardt, who explains the new penguin tracking system, developed at the University of Bristol, which can recognise an individual penguin from afar to try and understand why penguin numbers are falling...
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