“Completely surprising” discovery based on ancient pollutants suggests mining and smelting continued apace for centuries
Observations from the Little Bunker
Last updated: January 14, 2026 06:19 AM
Atmospheric CO₂
428.7 ppm
+18.1
ppm/year
Atmospheric CH₄
1940.59 ppb
+-0.24
ppb/year
Global Temperature
+1.48 °C
Peak: +1.73°C
World Population
8.1 billion
+67
million/year