Dr. Vincent Gray on historical carbon dioxide levels

NZCLIMATE TRUTH NEWSLETTER NO 312 JUNE 4th 2013 CARBON DIOXIDE There are two gases in the earth’s atmosphere without which living organisms could not exist. Oxygen is the most abundant, 21% by volume, but without carbon dioxide, which is currently only about 0.04 percent (400ppm) by volume, both the oxygen itself, and most living organisms…

About these ads

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…

Little oxygen hogs

Algae and bacteria hogged oxygen after ancient mass extinction, slowing recovery of marine life, say Stanford researchers After the biggest mass extinction in Earth’s history – 250 million years ago – algae and bacteria in the ocean rebounded so fast that they consumed virtually all the oxygen in the sea, slowing the recovery of the…