During the first half of the show, Nell and Chris spoke with Michael Erb, post-doctoral researcher at Northern Arizona University, regarding a recent publication by 19 scientists from 8 countries. Using 700 data sources, the group reconstructed 2000 years of climate history to reveal that although parts of the planet have warmed and cooled in the past, no past events compare in magnitude and geographic extent to the unprecedented warming we are currently experiencing.
This Green Earth - July 30, 2019 Michael Erb
