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: October 16, 2025 04:11 AM
Atmospheric CO₂
424.4 ppm
+18.2
ppm/year
Atmospheric CH₄
1933.54 ppb
+12.29
ppb/year
Global Temperature
+1.48 °C
Peak: +1.73°C
World Population
8.1 billion
+67
million/year