When Smokers Quit, Dormant Lung Cells Wake Up

Learn about how quitting smoking may reawaken healthy cells; how researchers figured out how to tell the age of crime scene fingerprints to help investigators; and why you sometimes yawn while exercising or singing. 

Quitting smoking doesn’t just slow lung damage, but can also reawaken undamaged cells by Grant Currin

  • Gallagher, J. (2020, January 29). Lungs “magically” heal damage from smoking. BBC News. https://www.bbc.com/news/health-51279355 
  • Pfeifer, G. P. (2020, January 29). Smoke signals in the DNA of normal lung cells. Nature, 578(7794), 224–226. https://doi.org/10.1038/d41586-020-00165-7 
  • Yoshida, K., Gowers, K. H. C., Lee-Six, H., Chandrasekharan, D. P., Coorens, T., Maughan, E. F., Beal, K., Menzies, A., Millar, F. R., Anderson, E., Clarke, S. E., Pennycuick, A., Thakrar, R. M., Butler, C. R., Kakiuchi, N., Hirano, T., Hynds, R. E., Stratton, M. R., Martincorena, I., … Campbell, P. J. (2020, January 29). Tobacco smoking and somatic mutations in human bronchial epithelium. Nature, 578(7794), 266–272. https://doi.org/10.1038/s41586-020-1961-1 

It’s been impossible to tell the age of crime scene fingerprints — until now by Grant Currin

Why we yawn during exercise by Ashley Hamer (Listener question from Kate in Pennsylvania)

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