Where did we come from, originally?
Regarding the very beginning, ie DNA, the recent analysis of an Australian meteorite provides evidence for Carl Sagan's idea that we are of extra-terrestial origins:
Regarding our evolution from apes to humans, I came across an article at Nature.com that proposes a nuclear reactor could occur at the base of Earth’s mantle - providing heat and also radiation. The key factor for me is this:
As humans, we originated in Africa. Radiation made it to the surface in Africa. Radiation causes mutations. Mutations can lead to evolution.
Researchers discovered the organic molecules uracil and xanthine in the meteorite and confirmed they could not have formed on Earth. These molecules, called nucleobases, are precursors to DNA...
"Emergent life systems may have adopted nucleobases from meteoritic fragments for use in an early and primitive genetic material, enabling them to pass on their successful features to the next generations," said study leader Zita Martins of Imperial College London.
Regarding our evolution from apes to humans, I came across an article at Nature.com that proposes a nuclear reactor could occur at the base of Earth’s mantle - providing heat and also radiation. The key factor for me is this:
Yet it is clear that natural nuclear reactors can occur. Crustal rocks at Oklo in Gabon, Africa, bear unambiguous evidence of spontaneous ignition of uranium fission in mineral deposits 1.7 billion years ago.
As humans, we originated in Africa. Radiation made it to the surface in Africa. Radiation causes mutations. Mutations can lead to evolution.
Labels: evolution
posted by Rob at
Monday, June 23, 2008
11 Comments:
Robert,
Very nice article.
it would be great to read more about it
Very intesting indeed.
thank you :)
It's the great intergalactic experiment ! We all came from the stars ... possibly many such stars in the far open infinite space ! The Galactic Federation has us on their surveillance cameras !!
My guess is they are here and seeing we make it through this transition, end of a natural cycle call it what you wish, it's knocking at your back door ! :)
I've long believed that at some point, hundreds of thousands or even millions of years ago, our DNA was altered, or in some way, modified.
I base these beliefs on common sense observations. Evolution, it seems to me, would proceed throughout the cosmos at a pace that is more or less in sync with the other species & the planet.
And looking around, I see that that is the case....for every species on this planet except us. What I do find odd is no one else finds this at all strange! Everyone just accepts that we began to walk upright & voila! Straight line to the Eve of Destruction!
We are light years ahead of our so-called fellow creatures...just as our creator/geneticists lightyears ahead of us.
Apparently they are checking up on their little experiment--I have to wonder if they'll intercede at the last minute or just record the results & close down the project--which is what a good scientist is supposed to.
Wow, do you really believe that a modified molecule attached itself to a metor and then "evolved" into man?
I feel like I am a young teenager reading my first sci-fi novel again!
Much easier to believe in a master creator even though that is not too exciting anymore to comtemplate.
Can you throw any light on the star "Sirius" A tribe living in the france area worshipped this star as the birthplace of their existence. My frustrated mind has a need to be calmed on this subject. Regards and Blessed Be Harry
Well...Touchdown didn't score with that one, that's for sure.
The evolutionary process does not work like some kind of instantaneous magic trick:
It's not a case of one second, a microbe..then POOF! voila! meet Homo Sapien!
If you took a little time to educate yourself as to understanding the process and how it actually works, you'd save yourself future embarrassments.
Often our society is presented with rather disconcerting opinions when it comes to dealing with matters of great importance and the meaning of life. Many assumptions that shape the ideas of our culture often go unchallenged. Many have what they find as an unshakable knowledge that there is meaning in and to life...
nisi credideritis, non intellegetis
"unless you have believed, you will not understand"
there must be some starting points that are things accepted as true before reasoning can begin
I perceive that we come from different sides of the aisle
if you would like to reason this issue, perhaps this is a venue that would allow us the privilege
Reason, indeed.
I am skeptical as to the sincerity behind that claim from any anti-evolutionist.
My experience has taught me that whenever the pro-ID crowd says they want to reason things out, they really mean they will ignore any science not in support of their conviction that "God did it".
Anyone wishing to engage in an honest debate about the Theory of Relativity must acknowledge first (and foremost) the difference between scientific theory & the laymen's usage of that term. So far, I've not come across any ID'rs willing to make that leap.
A scientific "theory" is one step up from a scientific fact in that a scientific theory is the umbrella under which are contained the thousands of actual scientific facts. A scientific theory is not just an educated guess, like oh, say for example, a lawyers theory would be. They are 2 entirely different kinds of theory.
Now, we have that settled--to refute the Theory of Evolution is to refute actual, in-your-face, undeniable, provable Facts. To deny the truth of the T.o.R. would be akin to denying that gravity exists.
Now, you may wish to believe that gravity does not exist, and that's fine & dandy...for you, but you'll not be teaching my children that belief-cum-fact in some sham of a science class in the local junior high.
i believe what keeps us from the truth is the ability to work and put ideas together ancient civilizations were able to use religion astronomy and science to figure out questions we have separated ourselfs so far we would never be able to find the missing link witch is right infront of our faces
edgr--You say the "missing link" is right in front of our faces--1st of all, what missing link are you refering to? Do you mean the missing link from ape to man? And as far as the ancients using astronomy & science to figure things out--well, astronomy is a relatively new science--prior to the 16th century, astrology & astronomy were one and the same...in other words, not very scientific--certainly far less scientific than what we have today. And I don't believe ancient civilizations peered back through time & space using Hubble-esque telescopes, nor split quantum particles using ultra high tech accelerators/colliders. Do you propose we revert back to studying sheep entrails to discover this "truth" you allude to?
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