This week's guests:
Professor Philip Stott
Dr Lynn Dicks
What can be done to recycle PVC doors and windows?
The first generation of PVC doors and windows are coming to the end of their lives. What can be done to recycle the plastics and what is the potential impact on the environment?
A link to the European Union's Environment page concerning the use and recycling of PVC. This includes a link to the EU Green Paper on the environmental issues of PVC.
The European PVC Industry's voluntary code on environmental sustainability including recycling of PVC.
Recovinyl, the industry supported vinyl recycling initiative. It offers financial incentives to support the collection of PVC waste for recycling.
Report by Greenpeace of PVC use (pdf), and the regulations governing it world wide.
What happens to spent lead shot in the countryside?
The vast majority of lead shot used by shooters in the UK ends up in the countryside. What is the impact of this and what are the restrictions on its use?
A review of the legislation on lead shot by the Department for the Environment, Food and Rural Affairs.
An article on the use of lead shot and its impact on the environment, contains good references for further reading.
The RSPB's press release about its study on compliance with lead shot regulation, and the wildfowling world's response to it.
An article from Shooting UK discussing the various alternatives to lead shot suitable for shooting wild fowl.
Do concentrations of oxygen fall in cities and can asthmatics detect those low concentrations?
An article from Asthma UK describing the possible effects on asthmatics of air pollution.
An article providing background and links to the levels and changes of oxygen in the atmosphere.
A brief description of the human respiratory system.
A description of how air sampling is conducted using the device of telling the autobiography of an air sampling jar.
How the human population is growing in height.
The human population is growing in height due to better health and diet. One listener wanted to know whether this also happens with animal species and what the consequences might be for human health.
An article from the San Francisco Chronicle describing the Dutch as the tallest people on Earth.
An article from The Independent detailing the discovery and features of the HMGA2 gene.
A timeline of human evolution with links to a large resource of human evolution information from New Scientist.
A long scientific article describing how the Indian Mongoose increased in size over a relatively short period of time when it was introduced to an island as a means of pest control.
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