View Full Version : Ep. 220: Mass Extinction Events

2011-May-04, 06:40 PM
The Earth seems like a safe place, most of the time. But we have evidence of terrible catastrophes in the ancient past. Times when almost all life on Earth was wiped out in a geologic instant. What could have caused so much devastation? And will something like this happen again?http://feeds.feedburner.com/~r/astronomycast/~4/h-bB-OAUxh0

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2011-May-23, 06:22 PM
I agree with Rich from May 5th. Having just finished listening to this episode, I was disappointed in the care that went in to it. Very little info was given as to when these extinctions occurred. How hard would it have been to have had a life classification scheme in front of you instead of brushing that off and offering "branches" instead. It's vertebrates, not vertebrae. It's genera, not generia. Less winging, more scholarship? Sorry for the critique...