![](https://gralienreport.b-cdn.net/wp-content/uploads/2019/02/1448-2-520x400.jpg)
This week we are joined by Randall Carlson, as we look at the evidence for an impact hypothesis underlying the Younger Dryas, a cold-reversal period that occurred approximately 12,700 years ago.
This week we are joined by Randall Carlson, as we look at the evidence for an impact hypothesis underlying the Younger Dryas, a cold-reversal period that occurred approximately 12,700 years ago.
This week we feature a panel discussion about new developments in the debate between alternative archaeology advocates, and the skeptical community.