See the Intro for context.
[20221231] 36 Things I Learned in 2022 – #1 blew my mind: For the first time in history in 2020, the weight of things produced by humans (concrete, metals, plastic) was greater than the weight of the global living biomass.
[20221224] Reported Sleep Duration Reveals Segmentation of the Adult Life-course into Three Phases – early adulthood (19-33yrs), mid-adulthood (34-53yrs), and late adulthood (54+yrs). They appear stable across culture, gender, education and other demographics.