How to test your water, get free filters and find other help.By Sophia Kalakailo, City BureauThis story is a partnership between Inside Climate News, Grist, WBEZ and City Bureau.
Observations from the Little Bunker
Last updated: December 06, 2025 04:12 AM
Atmospheric CO₂
426.8 ppm
+18.1
ppm/year
Atmospheric CH₄
1930.95 ppb
+-3.5
ppb/year
Global Temperature
+1.48 °C
Peak: +1.73°C
World Population
8.1 billion
+67
million/year