“Ted Nield is a doctor of geology and editor of the journal Geoscience. Written from that perspective, his book is an excellent introduction to meteoritics (the science of meteorites and impacts) as well as to the ongoing dynamic processes which shape the Earth.”
Comets Part 3. Cometary Impacts
Duncan Lunan continues his exploration of Comets
Apocalypse Soon: Will current global warming trigger a mass extinction?
Changes since the end of the Ordovician: red = extinction rate in time bins; green = the greatest magnitude of change in temperature in each bin; blue- the greatest rate of temperature change in each bin. Grey bars show mass extinctions (Credit: Song et al., Fig 1)
End-Triassic mass extinction: evidence for oxygen depletion on the ocean floor
“The authors suggest that the oxygen depletion stemmed from extreme global warming, which, in turn, encouraged methane production by other ocean-floor bacteria and, in a roundabout way, other chemical reactions that consumed free dissolved oxygen. “
The Carnian Pluvial Episode
Millions of years ago a series of massive volcanic eruptions in the Wrangellia Province of western Canada, blasted out huge volumes of volcanic basalt.
Can a supernova affect the Earth System?
“The Late Devonian is generally accepted to be one of the ‘Big Five’ mass extinction events”
The first new species of a living Hawaiian land snail described in 60 years
“This is a happy story where we discovered a snail that is still around.” Norine Yeung