In Earth’s largest extinction, land animal die-offs began long before marine extinction

New dates for fossils indicate land animal turnover extended for hundreds of thousands of years University of California – Berkeley The mass extinction at the end of the Permian Peri od 252 million years ago — one of the great turnovers of life on Earth — appears to have played out differently and at different…

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Permian Extinction… Because Climate Change!

Guest eye roll by David Middleton From Real Clear Science… The Two Great Killers of ‘The Great Dying’ By Ross Pomeroy – RCP Staff The Siberian Traps in northern Russia are picturesque. The expansive region is graced with serene slopes that jut into striking plateaus. Hiding behind this beauty, however, is a calamitous history, revealed…

'Broken world' blamed on Carbon

From the University of Leeds , 250 million year old certainty where there was none before, now megasized. Tropical collapse caused by lethal heat Extreme temperatures blamed for ‘Dead Zone’ Scientists have discovered why the ‘broken world’ following the worst extinction of all time lasted so long – it was simply too hot to survive.…

The Permo-Triassic Extinction: A Question of Timing

Guest post by Mark Hladik Introduction In a 31 August 2011 article A blast from the gas in the past, Anthony Watts and company at Watts Up With That discussed a new paper by Montenegro et al titled, “Climate Simulations of the Permian-Triassic Boundary:  Ocean Acidification and the Extinction Event”.  This paper places the blame for…

Mercury fingered in Permian-Triassic extinction

Hmmm. This sounds a bit like a sales pitch against “dirty coal” in support of the recent EPA Mercury ruling instead of regular geological research. I question this research claim because they only have evidence that there were spikes of Mercury during those events, not that they caused or accelerated the extinctions. The PR states:…