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BBC News - Science & Environment

1. Letter makes plea to rich over climate
   Scientists' letter urges wealthy to help fight “ecological catastrophe”.
2. Ozone layer: Banned CFCs traced to China say scientists
   Atmospheric observations pinpoint eastern China as the source of a rise in ozone-destroying chemicals.
3. Plastic straws: Which companies are banning them?
   A guide to the shops, restaurants and businesses that are moving to ban plastic straws.
4. Straws: UK government to bring in new controls on plastic
   In a bid to limit ocean pollution, the government will introduce new controls on plastic next year.
5. The effects of air pollution on human health
   People with lung conditions describe the impact air pollution has on their health.