by Sixstrings » Mon 08 Jun 2015, 18:30:36
$this->bbcode_second_pass_quote('Strummer', 'E')xcept for quite a lot of cases when no advances came along and millions of people died.
You seem to be suffering from a very strong case of
http://en.wikipedia.org/wiki/Survivorship_bias.
Well, yep, I get that. But our SPECIES has always survived. The closest call that homo sapiens had was about 70,000 years ago. A super volcano eruption aggravated an already ongoing climate change cycle, the ash in the skies blocked the sun out and the earth got even colder and we had a die off -- our species got down to just a few hundred pairs, small bands of survivors in Africa isolated from each other by thousands of miles. An extremely precarious, endangered species situation.
I tell this story repeatedly on this forum, because it's so fascinating.
$this->bbcode_second_pass_quote('', 'H')ow Human Beings Almost Vanished From Earth In 70,000 B.C.
With so much ash, dust and vapor in the air, Sam Kean says it's a safe guess that Toba "dimmed the sun for six years, disrupted seasonal rains, choked off streams and scattered whole cubic miles of hot ash (imagine wading through a giant ashtray) across acres and acres of plants." Berries, fruits, trees, African game became scarce; early humans, living in East Africa just across the Indian Ocean from Mount Toba, probably starved, or at least, he says, "It's not hard to imagine the population plummeting."
Then — and this is more a conjectural, based on arguable evidence — an already cool Earth got colder. The world was having an ice age 70,000 years ago, and all that dust hanging in the atmosphere may have bounced warming sunshine back into space. Sam Kean writes "There's in fact evidence that the average temperature dropped 20-plus degrees in some spots," after which the great grassy plains of Africa may have shrunk way back, keeping the small bands of humans small and hungry for hundreds, if not thousands of more years.
So we almost vanished.
But now we're back.
It didn't happen right away. It took almost 200,000 years to reach our first billion (that was in 1804), but now we're on a fantastic growth spurt, to 3 billion by 1960, another billion almost every 13 years since then, till by October, 2011, we zipped past the 7 billion marker, says writer David Quammen, "like it was a "Welcome to Kansas" sign on the highway."
In his new book Spillover, Quamman writes:
We're unique in the history of mammals. We're unique in this history of vertebrates. The fossil record shows that no other species of large-bodied beast — above the size of an ant, say or an Antarctic krill — has ever achieved anything like such abundance as the abundance of humans on Earth right now.
But our looming weight makes us vulnerable, vulnerable to viruses that were once isolated deep in forests and mountains, but are now bumping into humans, vulnerable to climate change, vulnerable to armies fighting over scarce resources. The lesson of Toba the Supervolcano is that there is nothing inevitable about our domination of the world. With a little bad luck, we can go too.
We once almost did.
http://www.npr.org/sections/krulwich/2012/10/22/163397584/how-human-beings-almost-vanished-from-earth-in-70-000-b-c I'm just saying that for PRACTICAL purposes, if you're worried about our SPECIES not surviving -- then no, that won't happen from AGW, and there is no "peak oil" anyway.
Homo sapiens is so crafty it can live just about any extreme environment, with stone age tech that is still ingenious -- from the walrus bone snow goggles of inuit, to the robes of Bedouins that function as air conditioning in the scorching hottest desert on earth.
Of course, what we are really talking about, is survival of our civilization and we're talking about preventing the human catastrophe of a massive die-off.
So those are the rational concerns, along with the very real threat to the environment. Other species are going extinct, because of us. We've actually pretty much cut down all the trees -- north america and europe were once COVERED with forests. This is the lungs of the planet, you cut down too many trees and that must surely effect climate somehow, I would just assume.
Rainforest in Brazil is still getting cut down. We're removing ecosystems all across the planet -- where is the point where it must stop?
The oceans could acidify. The gulfstream could shut down.
Barring a massive meteor impact, or another supervolcano, our species won't go extinct from it though. (although the history of species, generally, is that they all go extinct -- evolution is fluid, nothing in nature is permanent, and few species have stayed the same. They evolve into new branches of species, or they die out, mostly they just die out and then new ones evolve all over again, that's the fact of history)
But anyhow, yes the environment is an important issue, it does matter.
What are we disagreeing about, Strummer? That I'm not a "peak oil" doomer? (I never was)
I'm interested in the actual truth and reality, not what would fit into a "doom" narrative.
I've told this story before, too: I've got an antique local newspaper from the 1920s I picked up at a yard sale. One of the articles is "oil men fear the oil will run out."
The rational fact is that, they simply found more oil to drill and new tech to discover more and extract it. Then the advent of oil tankers and global oil exports and imports (they didn't have that in 1920).
Deep sea drilling. Then tar sands in Canada, then onto shale -- there is A LOT of shale in the world, holy cow. Look guys the oil is just not gonna "run out."
We'll actually transition from it, long before it ever gets close to that last drop extracted from the deep sea floor, and those last tar sands cooked up, and the last shale processed in Mongolia or somewhere.
P.S. anyhow, arguing about peak oil does not matter if everyone agrees on transitioning from fossil fuels, whatever one's reasons are peak oil, climate change, or just efficiency and competitive markets and not relying hydrocarbons alone.