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: January 20, 2026 04:20 PM
Atmospheric CO₂
429.1 ppm
+16.9
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