Policy ForumSCIENCE AND REGULATION

Don't abandon evidence and process on air pollution policy

See allHide authors and affiliations

Science  29 Mar 2019:
Vol. 363, Issue 6434, pp. 1398-1400
DOI: 10.1126/science.aaw9460

eLetters is an online forum for ongoing peer review. Submission of eLetters are open to all. eLetters are not edited, proofread, or indexed.  Please read our Terms of Service before submitting your own eLetter.

Compose eLetter

Plain text

  • Plain text
    No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.
Author Information
First or given name, e.g. 'Peter'.
Your last, or family, name, e.g. 'MacMoody'.
Your email address, e.g. higgs-boson@gmail.com
Your role and/or occupation, e.g. 'Orthopedic Surgeon'.
Your organization or institution (if applicable), e.g. 'Royal Free Hospital'.
Statement of Competing Interests
CAPTCHA

This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.

Image CAPTCHA
Enter the characters shown in the image.

Vertical Tabs

  • RE: Imagery of Industrial Stack Pollution

    The concerns in this article may be very valid. However, as in so many articles emphasizing air pollution, the imagery used in this piece of industrial stacks emitting what appears to be large columns of pollution is very deceptive and does not do this article justice. I don't know if the authors realize that what they have chosen to publish is no doubt plumbs of essentially pure steam emitting from furnaces that are not even in service. For your information, combustion furnaces like these are routinely "steamed out" as a safety precaution before being put into service after which one would expect to see no observable emissions and certainly nothing like what was shown here. I know of no place in this country that would permit smoke to spew unabated from industrial furnaces like what is conveyed by misusing this type of image.

    Competing Interests: None declared.
  • RE: What is based on for the ban on fireworks during the spring festival?
    • Shaoping Dai, Engineer, Hefei Beit garden Engineering Co., Ltd.

    Who decides how to establish causality? The real problem is what is based on for the EPA leadership decision. There must be direct evidence that the implementation of a regulatory action and/or a reduction in pollutant exposure leads to a health benefit. The CASAC can not prove manipulative causation. All methods come with assumptions and have their own strengths and weaknesses, so using varying methods can lead to varying views on a phenomenon. The EPA leadership now faces a dilemma. In china government has the same decision ethics, I pointed out on 2014 China Engineering Management Forum. As a part of Chinese culture, Chinese people traditionally light fireworks during the spring festival, but government has banned fireworks in most cities of China this year. APEC Blue refers to the rare blue sky in Beijing during APEC China 2014 due to emission reduction campaign directed by Chinese governmentin October and November 2014. Anhui Traffic Police No. 8 has announced that most highways will be closed because of snow storm on 2019/2/9.
    What is based on for decisions of the ban on fireworks, emission reduction campaign and highways closed? Decisions of the ban on fireworks, emission reduction campaign are based on future pollution that doesn’t happen. Decision of highways closed is likely based on real snow storm, but the real reason for decision of highways closed is traffic accident that doesn’t happen. Our decisions are always based on future event that doesn’t happe...

    Show More
    Competing Interests: None declared.
  • RE: What is based on for the ban on fireworks during the spring festival?
    • Shaoping Dai, engineer, Hefei Beit garden Engineering Co., Ltd.

    As a part of Chinese culture, Chinese people traditionally light fireworks during the spring festival, but government has banned fireworks in most cities of China this year. APEC Blue refers to the rare blue sky in Beijing during APEC China 2014 due to emission reduction campaign directed by Chinese governmentin October and November 2014. Anhui Traffic Police No. 8 has announced that most highways will be closed because of snow storm on 2019/2/9.
    What is based on for decisions of the ban on fireworks, emission reduction campaign and highways closed? Decisions of the ban on fireworks, emission reduction campaign are based on future pollution that doesn’t happen. Decision of highways closed is likely based on real snow storm, but the real reason for decision of highways closed is traffic accident that doesn’t happen. Our decisions are always based on future event that doesn’t happen. Decision is based on the prediction M, and the results of the decision are to negate the prediction M. You can say "why can we doubt government decisions", It is the base of democracy. Brain cognition is same model.
    We have found that Loop (Y0=XM⊕D) (especially Loop in Loop) of memory, prediction and decision making can be tested the relationship between perception and action. X is attentive input brain stimulation signal, M is predictive event signal, and D is decision-making result signal, the executed signal Y0 is output. Neurons always repeatedly detect input brain sti...

    Show More
    Competing Interests: None declared.