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Dover Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 12:13 AM
Original message
Climate change marks dawn of man
Edited on Sun Aug-21-05 12:15 AM by Dover
Climate change marks dawn of man
By Olivia Johnson
BBC News

Complex variation of the East African climate may have played a key role in the development of our human ancestors.

Scientists have identified extensive lake systems which formed and disappeared in East Africa between 1 and 3 million years ago.

The lakes could be evidence that global climate changes occured throughout this pivotal period in human evolution.

The findings, reported in the journal Science, suggest that humans evolved in response to a variable climate.

Dr Martin Trauth of the University of Potsdam and his team were able to identify and date the pre-historic lakes by studying layers of soil along the Rift Valley in Kenya, Ethiopia, and Tanzania.

http://news.bbc.co.uk/1/hi/sci/tech/4164022.stm
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greyl Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 12:19 AM
Response to Original message
1. I wonder if it will also mark the dusk nt
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wli Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 12:23 AM
Response to Reply #1
2. definitely
Even if the current runaway global warming doesn't do us in, there is nowhere else in the universe to go. The Sun's luminosity is going up steadily (as is normally the case with the stellar life cycle) and will heat up the planet progressively over time, until life is wiped out (and the oceans boiled off, and the surface rocks melted, and so on)e.
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greyl Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 12:26 AM
Response to Reply #2
3. yeah
Oddly enough, I just found this quote by Ray Bradbury. I wonder how long ago he wrote it?

"And if we really fear the darkness, if we really fight against it, then, for the good of all, let us take our rockets, let us get well used to the great cold and heat, the no water, the no oxygen, let us become Martians on Mars, Venusians on Venus, and when Mars and Venus die, let us go to the other solar systems, to Alpha Centauri, to wherever we manage to go, and let us forget the Earth....all that matters is that somehow life should continue, and the knowledge of what we were and what we did and learned: the knowledge of Homer and Michelangelo, of Galileo, Leonardo, Shakespeare, of Einstein! And the gift of life will continue."

http://www.astronautix.com/index.html
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wli Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 12:28 AM
Response to Reply #3
4. bad news is...
Interstellar travel is never going to happen. We already have the nonexistence proofs in physics. And other planets are infeasible to inhabit.

When Earth overheats its over.
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greyl Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 12:31 AM
Response to Reply #4
5. That's hell of a thing, ain't it?
One can't help laughing. :)
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SnoopDog Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 12:34 AM
Response to Reply #4
6. They all thought the world was flat too...
Just because the current science cannot figure out something, doesn't mean future scientist won't succeed...

You know, 'outside the box"....
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greyl Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 12:37 AM
Response to Reply #6
7. I hear ya, but
Edited on Sun Aug-21-05 12:38 AM by greyl
it doesn't make sense to me that a sure way to save ourselves from the problems we've caused by irresponsibly and shortsightedly "conquering the world", is just to "conquer it even better".
The frog is boiling.

edit: and btw, why do you carry an umbrella?
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SnoopDog Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 12:47 AM
Response to Reply #7
9. Carry an umbrella? Where did that come from?
Not sure where you are coming from my friend... Did you reply to the wrong post?

Anyway, my comment was only in response to the 'we are doomed' and we may be if stupid murderous folk run our country like the ones in office now.

We are but infants in the grand scheme of things. Hopefully, we will progress alittle further and 'gain another year' of insight.
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greyl Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 12:54 AM
Response to Reply #9
10. Fo' drizzle ! :)
Edited on Sun Aug-21-05 12:56 AM by greyl
SnoopDog? > Fo' drizzle? ... get it?
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SnoopDog Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 01:00 AM
Response to Reply #10
11. I wish... I'm only a cool white guy with a bird named 'SnoopDog"!
Thats all, unfortunately!


SnoopDog is a Sun Conure - beautiful bird that says 'woof woof'!

Peace out....
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greyl Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 01:08 AM
Response to Reply #11
12. - well yeah, i didn't think you were actually Snoop
You don't have to be for it to funny though, do you?
Anyway, I liked it. :)
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wli Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 01:18 AM
Response to Reply #6
14. that's not really how science operates
By and large what goes on is predicting things with greater accuracy and in more situations. The "new" theories just get better accuracy and work in more situations. They don't "revolutionize" reality.
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Maple Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 12:45 AM
Response to Reply #4
8. If everyone had thought like that
we'd still be in the caves, and only venturing out to hunt mammoth for lunch
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wli Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 01:17 AM
Response to Reply #8
13. not at all
Live every day like it's your last.
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Maple Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 01:21 AM
Response to Reply #13
15. No, live every day like it's
the first day of a new future...because it is
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wli Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 01:27 AM
Response to Reply #15
16. with Bushler in office my approach is more comforting n/t
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Maple Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 01:28 AM
Response to Reply #16
17. but it's not reality
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wli Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 01:30 AM
Response to Reply #17
19. neither is "dawn of a new future"
The future is a continuation of the past, and its trends are clearly visible.
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Maple Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 01:33 AM
Response to Reply #19
20. Sure it is
and the trends all point to it.

We are now living longer healthier lives than at any time in history...growing bigger...far surpassing old longevity marks...more people educated...more care of the world around us...enough food to feed the world...

Maybe your personal glass is half empty, but the world one is half full
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greyl Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 01:39 AM
Response to Reply #20
21. By "we", I assume you don't mean
"the community of life on earth".
You mean a very specific group of imaginary humans, right?
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Maple Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 01:42 AM
Response to Reply #21
22. 'We'....as in human beings living on the planet earth.
The collective 'we'...as in 'humanity'...'mankind' 'homo sapiens sapiens' ....us'ns...we da people

I don't know why people have so much trouble comprehending such a simple word.
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greyl Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 02:00 AM
Response to Reply #22
23. I comprehended it.
But you didn't comprehend my point.

Your rosy commentary was not accurate about humanity, let alone the entire community of life of which man is a part.
I think that kind of anthrocentric thinking is myopic, and added to a repression of very real downward spiral circumstances that deserve our attention well, how the hell is any sustainable progress going to be made?
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Name removed Donating Member (0 posts) Send PM | Profile | Ignore Sun Aug-21-05 02:09 AM
Response to Reply #23
24. Deleted message
Message removed by moderator. Click here to review the message board rules.
 
greyl Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 02:29 AM
Response to Reply #24
25. oh piss
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Maple Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 02:34 AM
Response to Reply #25
26. LOL
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greyl Donating Member (1000+ posts) Send PM | Profile | Ignore Mon Aug-22-05 03:03 AM
Response to Reply #20
29. Listen, I can't believe there's a need to defend "The Environment"
as an issue on a progressive Democratic message board, big tent and all.

This thread was originally about climate change. Global warming is a logically resulting topic.
The destined by god bush admin thinks we should look away from real problems, but I know better.

You said: "We are now living longer healthier lives than at any time in history...growing bigger...far surpassing old longevity marks...more people educated...more care of the world around us...enough food to feed the world..."

No longer on the subject of climate change, I see...
Can you see how thin a slice of humanity you are describing there?
Can you see that your view is anthrocentric?
Do you realize what you are ommitting from your description?

"We've become the destroyers of the earth because we've been driven by a fundamental misunderstanding of how the earth works and of our place in it, and we'll continue to be the destroyers of the earth for as long as this misunderstanding prevails. If you have a chance to read my other books, you'll read in THE STORY OF B this statement, "If the world is saved, it will not be saved by old minds with new programs but by new minds with no programs at all."

EarthFirst! and GreenPeace are fine programs, but they're fundamentally reactive--they wait for bad things to happen, then they fight against them. In ten years or twenty years, it will be your generation's actions that they'll be fighting against--but suppose you don't present them with anything to fight against? We don't need more people who will fight, we need more people who don't need to be fought against. Or to put it another way, EarthFirst! and GreenPeace are forever chopping away at the weed (and this is good), but we've got to kill the root that produces the weed. Until we do that, the weed will just keep growing back.

I have no new program to give you. What I have to give you is a new understanding of the problem, and this you must share with the people around you. You can't "make" people listen, but there are plenty of people out there who WILL listen--just as you did. When his student said, "Yes, but what should I DO?," Ishmael wasn't kidding when he said, "Teach a hundred people what I've taught you, and urge each of them to teach a hundred more."
http://www.ishmael.org/Interaction/QandA/Detail.CFM?Record=474
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Maple Donating Member (1000+ posts) Send PM | Profile | Ignore Mon Aug-22-05 09:19 AM
Response to Reply #29
30. There isn't a need
to 'defend the environment'. I was responding to your remarks about the earth having no future at all.

Climate changes are certainly occurring, and it's unknown as to whether anything we do can change that, although I'd certainly like to see us try. Otherwise we'll have to adapt to new conditions.

Since we don't know what the new conditions will be, nor what adaptations we'd have to make, it's also unknown if it's good or bad.

Either way, it's a tad early to write off the entire planet.

And it is neither a 'thin slice of humanity' nor anthrocentric.

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greyl Donating Member (1000+ posts) Send PM | Profile | Ignore Mon Aug-22-05 03:56 PM
Response to Reply #30
31. I never said "the earth has no future at all".
(I'm not convinced that it's wise to take your comments seriously, but for "posterity", I'll respond)

The earth will be fine. I'm talking about life on earth, focusing on human life and our responsibility to the community of life we are a part of. Like Carlin said, "the earth may shake us off like a bad case of fleas".

"Climate changes are certainly occurring, it's unknown as to whether anything we do can change that"

It's unknown whether or not our culture has an effect on the climate? Where am I, I feel dizzy.

"And it is neither a 'thin slice of humanity' nor anthrocentric."

You had said "We are now living longer healthier lives than at any time in history...growing bigger...far surpassing old longevity marks...more people educated...more care of the world around us...enough food to feed the world"

The very fact that the "we" in your comment is "humanity", means it is an anthropocentric comment.
Beyond being anthropocentric, your rosy view is an inaccurate and inadequate assessment of the current living conditions for huge "slices" of humanity. And beyond that, your comment is a repetition of a dangerous cultural mythology in which the earth was made for man, and man was made to conquer and rule it. After all, Jesus didn't come to save the whales, did he?

You are also saying that because the earth has gone through cycles for billions of years, we shouldn't be concerned or alarmed by current trends. Cycles are natural, you say. Sustainable evolution is destined to win out as it always has, it's a hallmark you say.

You are forgetting that extinction is a prevalent component of those cycles. Maybe you don't realize we are in the midst of a mass extinction. Possibly, you are forgetting the fact that our 10,000 year old culture has not been born out through natural selection and evolution to be a successful civilizational experiment. In fact it is failing, and the signs are accumulating at an accelerating rate.

Unless the blinders are taken off and our culture begins to have the ability to respond to it's effects on the community of life, we are doomed to see a massive reduction in human population.

To end on a positive and hopeful note: If all but half a billion humans on earth die off from famine, disease, or war, our civilization will be destroyed, but humanity will continue, hopefully having learned some valuable lessons. And maybe other life on earth will regain it's "right" to evolve along with us.

"I recently read about Peak Oil. The theory states that we will soon (within ten years) run out of cheap oil, which is the basic resource for everything in our modern society and most importantly, our modern agriculture. The result of the oil-induced collapse will be (literally) billions of deaths. What is your opinion on this? Is it too late to save the world now?

...and the response:
As I understand the term, saving the world means preserving it as a viable home to life, including human life. At the moment, the greatest threat to this goal is the continued uncontrolled growth of the human population. I personally doubt that even our present population is sustainable, since it is by now well known that, because of our impact on the earth, we are in a period of mass extinctions. To sustain our six billion, so much biomass is being taken from the species around us that we are seriously attacking the diversity of the living community that makes the earth a viable home to life, including our own. Thus you have to see that maintaining and increasing our population of six billion is not at all equivalent to "saving the world." If the coming oil crisis results in a global famine and the death of billions (which is not unthinkable, though I personally am reluctant to make predictions about the future), then this would not work AGAINST saving the world, it would work FOR it. The period of mass extinctions would come to an immediate end. Civilization would be devastated, of course, but human life would not disappear. The alternative of continued human growth to an anticipated twelve billion would, I feel sure, produce a much more dire future and a general and irreversible ecological collapse that would doom all or most large terrestrial organisms like mammals, including humans.
http://www.ishmael.org/Interaction/QandA/qanda.cfm


I have a question about World Health Organization and their policy on world population growth. Every time I discuss population growth and solutions with other people, I meet the same argument over and over again, which goes approx like this: "The WHO estimates the population growth to rise to around 12 billion people and then stabilize there in 2050-60. (The numbers flux a bit) This is "proof" that family planning works, the problem is under control, and all talk about collapse are just silly cultism." Well...they are right/ The WHO really DO think the world population will stabilize at 12 billion. They probably have heaps of scientific reports to prove this right, and a crowd of experts that assure us of this fact, and therefore there is no cause for alarm. The collapse of mankind will NOT come. My Question is therefore What is your view on the WHO policy on population growth, and what do you answer when you get hit over your head with all that expert-talk?

...and the response:
The WHO projection would make perfect sense if the REST of the earth's living community remained stable. Unfortunately, it is NOT remaining stable. In order to sustain a human population of 6 billion humans the rest of the living community is losing upwards of 200 species a day--70,000 species a year. It is well recognized that we are in a period of mass extinction, for which the vastness of the human population is directly responsible. This fact alone assures us that a human population of 6 billion is not sustainable; the living community (of which we are a part) simply cannot indefinitely sustain a loss of 200 species a day. As our population grows, the number of extinctions will increase, probably geometrically. At a human population of 12 billion, the number of extinctions might be a thousand a day or ten thousand a day. The fact that OUR population might be stable at 12 billion would not mean that the REST of the living community would be stable--and our survival depends absolutely on its survival. The "experts" you speak of are still possessed of the ancient (and biologically ridiculous) idea that humanity is a species that is separate from the rest of the living community--and can live independently of that community.
http://www.ishmael.org/Interaction/QandA/qanda.cfm

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Maple Donating Member (1000+ posts) Send PM | Profile | Ignore Mon Aug-22-05 05:29 PM
Response to Reply #31
32. Well I'm quite serious
and the remark I was responding to was 'The future is a continuation of the past, and its trends are clearly visible.'

Perhaps to you.

Yes, it's unknown if WE are having the sole effect on the climate. That's certainly anthropocentric.

We've had both heat waves and ice ages before after all. We're not helping things by any means, and if this current urge to clean up the air and the earth continues, then it's a good thing overall, whether we caused it or not.

Humans are, I'm afraid, living longer healthier lives than ever before in history...and that means everybody. Better in some places than others to be sure, but overall everyone is doing better.

Cave life, life in the Dark Ages, etc all kinda sucked. There was no 'golden age'...just mostly nasty, brutish and short. People were smaller then too.

I'm an atheist, so I have no idea what you think Jesus was doing, nor, obviously, do I subscribe to any biblical theories about ruling the earth.

I didn't say 'cycles are natural'...we are on a rock in space, and don't know that there ARE any cycles. We do know this has occurred before, but we haven't been around long enough to know if it's any continuing 'natural cycle'

However, we are not about to die out, nor is it the end of the world. In the 60s we were all told that by now each of us would only have one square foot of ground to stand on...and that we'd all be choking to death and starving anyway.

Lotta predictions...Malthus made em long ago. So did the Club of Rome. Still hasn't happened, and isn't going to in the foreseeable future.

We have lots of oil...just not 'cheap' oil...or at least at the prices we've been used to.

However, when a commodity becomes too expensive...people move to an alternative. We have em, we just don't use em. But we will.

However, humanity has never just 'given up', and we aren't about to now either.
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greyl Donating Member (1000+ posts) Send PM | Profile | Ignore Wed Aug-24-05 02:04 AM
Response to Reply #31
33. Does anyone else have counterpoint to my post? nt
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Meldread Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 01:29 AM
Response to Reply #4
18. Doubtful.
Certainly, if it happens within the next 100 years or so that'll probably be the case. Although I think the future looks bright and the only thing we have to fear in our own extinction is our own ignorance and stupidity. If we can somehow manage to not blow each other up with Nukes and not completely destroy our environment then we have a good chance.

I think if M-Theory/Super String Theory pans out to be anything, and we somehow manage to find away to manipulate strings the sky will become the limit to what we can achieve – we'd only be limited (I would think) by our own imagination.
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moggie Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 05:09 AM
Response to Reply #4
27. In our current form, sure
The neighbourhood is hostile to us without extensive terraforming, and would still be vulnerable anyway. Interstellar travel isn't feasible for humans. But who's to say we'll retain our current form indefinitely? In future we may be able to modify ourselves, tailor ourselves for environments other than Earth's, or upload into software form and live wherever we can send hardware.
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Astarho Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-21-05 09:39 PM
Response to Reply #4
28. Said the Type 0 civilization (nt)
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