Episode 1336 • • 1:45:25 - 1:46:55
1336: Climate Crisis Special
Geological Degassing, Carbon Dioxide as Plant Food
A geologist explains that the Earth has been "degassing" carbon dioxide for over 4.5 billion years and that current levels (0.04%) are dangerously low. He argues that CO2 is essential "plant food" rather than a pollutant, noting that halving the current amount would kill all terrestrial plants. The speaker points out that historical sea level changes have been as large as 1,500 meters, far exceeding modern variations.