Do negative air ions improve mood, anxiety, depression, alertness? Part of this video was sponsored by LastPass, click here to find out more: http://bit.ly/2RZZTZk Special thanks to Prof. Jack Beauchamp and Dr. Nathan Dalleska from Caltech for all their help running these experiments and discussing the research. For more, check out the links below: http://www.cce.caltech.edu/people/jesse-l-jack-beauchamp http://beckmaninstitute.caltech.edu/eac.shtml If you want to dig into the research on negative ions yourself, I suggest starting with the review studies: Air ions and mood outcomes: a review and meta-analysis. Perez V, Alexander DD, Bailey WH. BMC Psychiatry. 2013 Jan 15;13:29. https://www.ncbi.nlm.nih.gov/pubmed/23320516 Air ions and respiratory function outcomes: a comprehensive review Dominik D Alexander, William H Bailey, Vanessa Perez, Meghan E Mitchell, and Steave Su J Negat Results Biomed. 2013; 12: 14. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3848581/ Exposure of laboratory animals to small air ions: a systematic review of biological and behavioral studies. Bailey WH, Williams AL, Leonhard MJ. Biomed Eng Online. 2018 Jun 5; 17(1):72. https://www.ncbi.nlm.nih.gov/pubmed/29866122 Thumbnail photography by Raquel Nuno VFX by Alan Chamberlain Sound recording by Whitney Clavin Motion Graphics by Charlie Kilman Music from Epidemic Sound: http://epidemicsound.com/ "Capture a Picture 1" and "Seaweed"