Any evidence for the comet impact in the ice layers?
Not too long ago I posted an item on how scientists were able to
detect when supernovae appeared in Earth's skies from Arctic ice
samples, including one supernova event not recorded by anyone.
Now if we can detect celestial events many light years away in this
manner, how about a really close one 12,900 years ago?
No, I missed that Nova episode and the transcript isn't up yet.
http://www.pbs.org/wgbh/nova/clovis/