Harvard University researcher Michael McElroy made groundbreaking contributions to climate science and helped shape global environmental policy.By Phil McKennaMore than half a century ago, at Queen’s University Belfast in Northern Ireland, Michael McElroy’s classmates had just finished an exceptionally difficult math exam and were ready to vent. But first they wanted to hear from the class’s star student.
Observations from the Little Bunker
Last updated: February 24, 2026 10:22 PM
Atmospheric CO₂
429.9 ppm
+17.3
ppm/year
Atmospheric CH₄
1946.47 ppb
+6.49
ppb/year
Global Temperature
+1.48 °C
Peak: +1.73°C
World Population
8.1 billion
+67
million/year