Observations from the Little Bunker

Last updated: June 04, 2025 10:11 AM

Atmospheric CO₂

427.2 ppm

+3.4 ppm/year

Atmospheric CH₄

1935.33 ppb

+9.35 ppb/year

Temperature Overshoot

+1.2 °C

Target: 1.5°C

World Population

8.1 billion

+67 million/year

In This Issue

May 27, 2025 • Research papers

Proceedings of the National Academy of Sciences, Volume 122, Issue 21, May 2025.

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