Did a comet strike the Earth 12,800 years ago, causing global wildfires and an age of cooling? Scientists dispute whether that happened. Dr. Joanne Ballard is a co-author of two new papers with evidence that it did happen. Comet expert Mark Boslough says the science behind this hypothesis is flawed. I close with my own impressions of the science, the believers, and why all this matters a lot for our future. After all, the next comet strike can come at any time. Radio Ecoshock 180307
Interviews and music by Alex Smith of Radio Ecoshock
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