Tag: extinction

The Extinction Survey

Guest Post by Dmitry Orlov

Tim White

There is a survey currently running on the Doomstead Diner, which asks people to make specific, numerical estimates about the timing of human extinction. It is inspired by the work of Guy McPherson, who has amassed much scientific evidence that points to very major climate disruption occurring over the next 2-3 decades, caused by multiple runaway positive feedback effects, such as Arctic methane release. Guy’s conclusion is that these changes will mean that the Earth will no longer provide a habitat for humans, leading to near-term human extinction. His reasoning, as far as I have been able to piece it together, rests on a supposition of time-invariance: the planet will be warmer than it has ever been in human experience; therefore, no humans will survive. This is far short of a proof.

I see two ways to provide a proof.

The first is based on proving the existence of an extinction mechanism. For example, humans don’t function well when atmospheric CO2 concentrations exceed 5000ppm, which cause dizziness, fainting spells and asphyxiation. Right now they are around 400ppm, going up by 2ppm every year. If that stays on track, this gives us 2300 years. However, there is not enough fossil fuels to keep burning at the same rate for another 2300 years. I am not aware of any straightforward bit of math that would conclusively demonstrate the impossibility of our continued existence.

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Extinct—Extincter—Extinctest

Guest Post by Dmitry Orlov

David Herbert

This blog is dedicated to the idea of presenting the big picture—the biggest possible—of what is going on in the world. The abiding areas of interest that make up the big picture have included the following:

1. The terminal decay and eventual collapse of industrial civilization as the fossil fuels that power it become more and more expensive to produce in the needed quantities, of lower and lower resource quality and net energy and, eventually, in ever-shorter supply.

The first guess by Hubbert that the all-time peak of oil production in the US would be back in the 1970s was accurate, but later prediction of a global peak, followed by a swift collapse, around the year 2000 was rather off, because here we are 15 years later and global oil production has never been higher. Oil prices, which were high for a time, have temporarily moderated. However, zooming in on the oil picture just a little bit, we see that conventional oil production peaked in 2005—just 5 years late—and has been declining ever since, and the shortfall has been made up by oil that is difficult and expensive to get at (deep offshore, fracking) and by things that aren’t exactly oil (tar sands).

The current low prices are not high enough to sustain this new, expensive production for much longer, and the current glut is starting to look like a feast to be followed by famine. The direct cause of this famine will not be energy but debt, but it can still be traced back to energy: a successful, growing industrial economy requires cheap energy; expensive energy causes it to stop growing and to become mired in debt that can never be repaid. Once the debt bubble pops, there isn’t enough capital to invest in another round of expensive energy production, and terminal decay sets in.