Supernovas may have triggered life-threatening changes in ancient Earth's climate. Scientists say it could happen again

[Admin]

Ancient supernovas may have blasted Earth with powerful radiation, causing dramatic changes in our climate, and could do so again, posing a threat to life.

Supernovas may have triggered life-threatening changes in ancient Earth's climate. Scientists say it could happen again : Read more

 

[Unclear Engineer]

It would be a much more informative article if it included some information about the coincidences of those 11 spikes in tree ring C-14 with (1) climate and/or species effect events from geology and paleontology, and (2) observable supernova remnants within something like 100 light years or a few hundred light years.

As this article stands, there is little evidence presented that the hypothesis has observations of coincident effects to support it.