Was There a Civilization On Earth Before Humans? - The Atlantic


51 bookmarks. First posted by aebraddy april 2018.


I honestly don't know what to tag this. SF?
sf  mindblowing  deephistory 
8 weeks ago by hypcourt
RT : Was There a Civilization On Earth Before Humans?
from twitter
september 2018 by etorreborre
When it comes to direct evidence of an industrial civilization—things like cities, factories, and roads—the geologic record doesn’t go back past what’s called the Quaternary period 2.6 million years ago. For example, the oldest large-scale stretch of ancient surface lies in the Negev Desert. It’s “just” 1.8 million years old—older surfaces are mostly visible in cross section via something like a cliff face or rock cuts. Go back much farther than the Quaternary and everything has been turned over and crushed to dust.
september 2018 by spectrevision
RT : Was there a civilization on Earth before humans? looks at the available evidence
from twitter
july 2018 by pcantrell
"It’s not often that you write a paper proposing a hypothesis that you don’t support. Gavin and I don’t believe the Earth once hosted a 50-million-year-old Paleocene civilization. But by asking if we could “see” truly ancient industrial civilizations, we were forced to ask about the generic kinds of impacts any civilization might have on a planet. That’s exactly what the astrobiological perspective on climate change is all about. Civilization building means harvesting energy from the planet to do work (i.e., the work of civilization building). Once the civilization reaches truly planetary scales, there has to be some feedback on the coupled planetary systems that gave it birth (air, water, rock). This will be particularly true for young civilizations like ours still climbing up the ladder of technological capacity. There is, in other words, no free lunch. While some energy sources will have lower impact—say solar vs. fossil fuels—you can’t power a global civilization without some degree of impact on the planet.
"Once you realize, through climate change, the need to find lower-impact energy sources, the less impact you will leave. So the more sustainable your civilization becomes, the smaller the signal you’ll leave for future generations."

--- Stanislaw Lem, please call your office. Also, I like the immediately-following bit:

"In addition, our work also opened up the speculative possibility that some planets might have fossil-fuel-driven cycles of civilization building and collapse. If a civilization uses fossil fuels, the climate change they trigger can lead to a large decrease in ocean oxygen levels. These low oxygen levels (called ocean anoxia) help trigger the conditions needed for making fossil fuels like oil and coal in the first place. In this way, a civilization and its demise might sow the seed for new civilizations in the future."
paleontology  science_fiction  climate_change  have_read  to:blog 
july 2018 by cshalizi
via Pocket - Was There a Civilization On Earth Before Humans? - Added April 19, 2018 at 09:22PM It only took five minutes for Gavin Schmidt to out-speculate me. Schmidt is the director of NASA’s Goddard Institute for Space Studies (a.k.a. GISS) a world-class climate-science facility. One day last year, I came to GISS with a far-out proposal.
IFTTT  Pocket 
may 2018 by peteyreplies
It’s not often that you write a paper proposing a hypothesis that you don’t support. Gavin and I don’t believe the Earth once hosted a 50-million-year-old Paleocene civilization. But by asking if we could “see” truly ancient industrial civilizations, we were forced to ask about the generic kinds of impacts any civilization might have on a planet.
science  civilization  archaeology  history  Astrobiology  geology  anthropocene 
april 2018 by kybernetikos
"So, could researchers find clear evidence that an ancient species built a relatively short-lived industrial civilization long before our own? Perhaps, for example, some early mammal rose briefly to civilization building during the Paleocene epoch about 60 million years ago. There are fossils, of course. But the fraction of life that gets fossilized is always minuscule and varies a lot depending on time and habitat. It would be easy, therefore, to miss an industrial civilization that only lasted 100,000 years—which would be 500 times longer than our industrial civilization has made it so far."

"... Gavin and I don’t believe the Earth once hosted a 50-million-year-old Paleocene civilization. But by asking if we could “see” truly ancient industrial civilizations, we were forced to ask about the generic kinds of impacts any civilization might have on a planet. That’s exactly what the astrobiological perspective on climate change is all about."
science  history  crazy 
april 2018 by tremolo
It only took five minutes for Gavin Schmidt to out-speculate me. Schmidt is the director of NASA ’s Goddard Institute for Space Studies (a.k.a. GISS) a…
from instapaper
april 2018 by kohlmannj
the more sustainable your civilization becomes, the smaller the signal you’ll leave for future generations.
science  civilization  archaeology  human 
april 2018 by mirthe
It only took five minutes for Gavin Schmidt to out-speculate me. Schmidt is the director of NASA’s Goddard Institute for Space Studies (a.k.a. GISS) a world-class climate-science facility. One day last year, I came to GISS with a far-out proposal.
Archive  instapaper  tenpla 
april 2018 by WFreeland
It only took five minutes for Gavin Schmidt to out-speculate me. Schmidt is the director of NASA ’s Goddard Institute for Space Studies (a.k.a. GISS) a…
♥instapaper 
april 2018 by anatomatic
It only took five minutes for Gavin Schmidt to out-speculate me. Schmidt is the director of NASA’s Goddard Institute for Space Studies (a.k.a. GISS) a world-class climate-science facility. One day last year, I came to GISS with a far-out proposal. via Pocket
IFTTT  Pocket 
april 2018 by kkahnharris
It only took five minutes for Gavin Schmidt to out-speculate me. Schmidt is the director of NASA’s Goddard Institute for Space Studies (a.k.a. GISS) a world-class climate-science facility. One day last year, I came to GISS with a far-out proposal. via Pocket
IFTTT  Pocket 
april 2018 by Pheelmore
It only took five minutes for Gavin Schmidt to out-speculate me. Schmidt is the director of NASA ’s Goddard Institute for Space Studies (a.k.a. GISS) a…
from instapaper
april 2018 by mrtoto
It only took five minutes for Gavin Schmidt to out-speculate me. Schmidt is the director of NASA ’s Goddard Institute for Space Studies (a.k.a. GISS) a…
from instapaper
april 2018 by zota
It only took five minutes for Gavin Schmidt to out-speculate me. Schmidt is the director of NASA ’s Goddard Institute for Space Studies (a.k.a. GISS) a…
from instapaper
april 2018 by loganrhyne
"The Silurian Hypothesis"

This is some nice big-picture speculative reporting by
from twitter_favs
april 2018 by rtanglao
It only took five minutes for Gavin Schmidt to out-speculate me. Schmidt is the director of NASA ’s Goddard Institute for Space Studies (a.k.a. GISS) a…
from instapaper
april 2018 by joeybaker
It only took five minutes for Gavin Schmidt to out-speculate me. Schmidt is the director of NASA ’s Goddard Institute for Space Studies (a.k.a. GISS) a…
from instapaper
april 2018 by flobosg
It only took five minutes for Gavin Schmidt to out-speculate me. Schmidt is the director of NASA ’s Goddard Institute for Space Studies (a.k.a. GISS) a…
from instapaper
april 2018 by divigation
How to discover a civilization that vanished 100 million years ago
from twitter_favs
april 2018 by jey
It only took five minutes for Gavin Schmidt to out-speculate me. Schmidt is the director of NASA’s Goddard Institute for Space Studies (a.k.a. GISS) a world-class climate-science facility. One day last year, I came to GISS with a far-out proposal. via Pocket
IFTTT  Pocket 
april 2018 by domingogallardo
It only took five minutes for Gavin Schmidt to out-speculate me. Schmidt is the director of NASA’s Goddard Institute for Space Studies (a.k.a. GISS) a world-class climate-science facility. One day last year, I came to GISS with a far-out proposal. via Pocket
IFTTT  Pocket  facebook  twitter 
april 2018 by Werderbach
It only took five minutes for Gavin Schmidt to out-speculate me. Schmidt is the director of NASA ’s Goddard Institute for Space Studies (a.k.a. GISS) a…
from instapaper
april 2018 by mnewt