2025-01-05 17:34:10
False. CO₂ levels have been stable at much lower concentrations (e.g., 180-280 ppm) for hundreds of thousands of years until the Industrial Revolution. Current levels (around 420 ppm) represent a rapid increase unprecedented in human history. [Link] NEEDS_MORE_RATINGS(1-1-6) Author
2025-01-06 18:53:52
A comprehensive study published in Dec 2023 offers a detailed reconstruction of atmospheric CO2 levels throughout the Cenozoic era, which spans the last 66 million years, showing CO2 was much higher than today. [Link] NEEDS_MORE_RATINGS(1-0-1) Author