Proceedings of the National Academy of Sciences, Volume 123, Issue 4, January 2026. SignificanceThe Paleocene–Eocene Thermal Maximum (PETM; ~56 Ma) was marked by rapid global warming, making it a valuable test bed for the effects of extreme climate change on the environment. Using pollen and spores preserved in a laminated sedimentary …
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