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Aug 8, 2023

What does the body of evidence say on air quality and how to protect ourselves from airborne pollution? Plus: a birth control pill becomes easier to access in the Republic of Gilead, and Chris returns to the hot seat to help a lawyer with blood-streaked loose stool!

Block 1:

(2:11) Air Quality: forest fires and their causes; major air pollutants; what causes air pollution; improvements in air quality

Block 2:

(8:56) Air Quality: what the air quality index is; why there are different indices in different countries; whether poor air quality leads to poor health outcomes; biomass air pollution; how we can protect ourselves

Block 3:

(24:03) An over-the-counter birth control pill in the USA

Block 4:

(33:15) Chris becomes House, MD. His patient: a lawyer with blood-streaked loose stool

* Theme music: “Fall of the Ocean Queen“ by Joseph Hackl


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1) Basics of air quality:

2) Sources of air pollution:

3) Quantifying the risk of air pollution:

4) The WHO’s estimates of premature deaths worldwide in 2019 due to poor air quality:

5) The Air Quality Index: & &

6) Report on the health effects of air quality:

7) The Harvard Six Cities study:

8) Cochrane review on individual-level interventions to reduce exposure to air pollution:

9) The case of the 36-year-old lawyer with blood-streaked loose stool:


It’s Not Twitter, But It’ll Do:

1) Jonathan’s article on transcranial direct current stimulation:

2) Jonathan on the Conspirituality podcast to discuss Andrew Huberman:

3) Jonathan is now on Bluesky:

4) Chris wrote a book called Does Coffee Cause Cancer? Pre-order it now!