|Richard Daniel chairs the interactive environmental programme in which he and his guests deal with listener's questions and concerns.|
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Home Planet, PO Box 3096, Brighton BN1 1PL
|LISTEN AGAIN 30 min|
|"Home Planet is the environmental programme for which you set the agenda. We tackle your questions and concerns and try and make some sense out of the conflicting opinions which make up the environmental debate."|
Dr Madeline Havard
Chief Executive, Wildlife Trust of South and West Wales
Dr Roger Key
Invertebrate Biologist, English Nature
Professor Philip Stott
Bio-geographer, University of London
Ticks and Lyme Disease
Do fizzy drinks add to the C02 in the atmosphere?
Philip Stott's on-air experiment, a simple way to work out how much carbon dioxide there is in a fizzy drink:
Take a fizzy drink bottle, ensuring that the drink has been settled for
some time, and weigh the bottle on your most sensitive kitchen scales.
Weigh an empty bottle of the same kind so that you can work out the
weight of the liquid alone. Shake the full bottle thoroughly and let the
froth subside completely (this is most important). Then, carefully open
the cap a fraction so that the gas alone can escape safely from the
bottle. When all the gas has escaped, close the cap firmly and reweigh
the bottle. You can now calculate the weight of the carbon dioxide
released from the bottle, as well as the grams of carbon dioxide per litre of
This little experiment can be refined in two neat ways.
(a) First, you can draw a graph showing the amount of carbon dioxide released for one
shake, two shakes, and so on, until around 15 shakes, when, in most
cases, all the gas under pressure will have been released from the
bottle (a tiny amount will remain dissolved at atmospheric pressure).
For a 450 ml bottle, you will probably get between 2.2g to 2.4g of
carbon dioxide after 15 shakes.
(b) Secondly, you can calculate the differing amounts of carbon dioxide released from the bottle at different temperatures; the colder the bottle, the less carbon dioxide
will be released per shake.
Are there scorpions in the UK?
University of Sussex: scorpions on Sheerness
University of Exeter: bug club
Have our National Parks helped nature conservation?
Association of National Park Authorities
Council for National Parks
Scottish Executive Consultation Paper
National Parks Scotland Act
UK Biodiversity Action Plan
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