With an updated edition of his 2019 book, Greg Nemet looks at global progress and puts U.S. obstacles in perspective.By Dan GearinoFive years ago, Greg Nemet wrote about the economic and technological factors that were helping to make solar power one of the world’s least-expensive electricity sources.
Observations from the Little Bunker
Last updated: October 16, 2025 02:57 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