Proceedings of the National Academy of Sciences, Volume 123, Issue 6, February 2026. SignificanceIn the presence of outgroups, adults may set aside their personal preferences to align with perceived ingroup norms, in an outward show of loyalty. In three experiments, we demonstrate that 2-y-old toddlers expect such shows of loyalty. When …
Observations from the Little Bunker
Last updated: February 24, 2026 10:22 PM
Atmospheric CO₂
429.9 ppm
+17.3
ppm/year
Atmospheric CH₄
1946.47 ppb
+6.49
ppb/year
Global Temperature
+1.48 °C
Peak: +1.73°C
World Population
8.1 billion
+67
million/year