9 replies to this topic

[Italian Ufo]

http://www.bbc.co.uk...health-13278255

http://www.icr.org/article/2711/

[Craven]

How's that a news?

[Anu]

eaven before entering in collage I remember studying evolution evidences in biology
and i recall that in some phases our embriones look like fish, and is quite logical

[Raklian]

I really hate it when creationists deny evolution even in the face of overwhelming evidence that supports it. They say it is just a theory, therefore evolution does not really exist. Their logic never ceases to amaze and annoy me at the same time! When I meet someone who argues this way, I would tell him that the same could be said about his God. But of course, they're left spluttering and denying the validity of my couner-arguement.

[Craven]

Creationists love to regard scientific theory of evolution as if it was working hypothesis. It all boils down to missunderstanding of word "theory".

A scientific theory is a well-substantiated explanation of some aspect of the natural world, based on a body of facts that have been repeatedly confirmed through observation and experiment. Such fact-supported theories are not "guesses" but reliable accounts of the real world. The theory of biological evolution is more than "just a theory." It is as factual an explanation of the universe as the atomic theory of matter or the germ theory of disease. Our understanding of gravity is still a work in progress. But the phenomenon of gravity, like evolution, is an accepted fact.

Edited by Craven, 18 June 2012 - 02:11 PM.

[Italian Ufo]

"theory" not a principle

the shark origins are also news.

Edited by Italian Ufo, 18 June 2012 - 02:23 PM.

[Raklian]

99% of the world's species share a common ancestor.

1% accounts for some of the bacteria we just discovered whose evolutionary origins have yet to be explained, leaving scientists stumped.

[Alric]

You can almost trace human evolution back to the point where we were just a single cell life form. Of course it gets a bit more sketchy and there are more leaps when you get that far back, but we do have an idea of the process going back that far.

[kjaggard]

we came from chemical byproducts of the early earths atmosphere mixing in sea foam bubbles. thus the first cells were created, these are much like the mitochondria in your cells today. There where likely several types and models that existed at the time. With vulnerabilities and strengths. The evidence suggests that one type formed an alliances with other types where the first one would be prolific and adaptive but vulnerable to outside forces and ineffective energy harvester, and the others would be a powerful energy surplus generators and guards for the first cell. And they enclosed themselves in a second bubble. (In all likelihood it's better described that one cell type was weak and vulnerable but figured out how to manipulate others via chemical signals- cellular mind control= and mission one was to protect it while it proliferated by making a wall around them to make a fortress from outside dangers).

The genetic fortresses succeeded wildly and subsequent generations found ways to adapt to fill niches in the environment. Those cells that worked in close proximity did better then a lone cell in the wild and thus prospered more. Sometimes prospering so much that they were wall to wall with one another. but rather than harming them this seemed to benefit them. Thus they adapted to intercell communications that permitted multicelled organisms.

Soon those cells borrowed tricks from their anscestors that let them manipulate other cells into symbiotic processes that allowed them to do things they couldn't do on their own. The codes for ways to do these things recorded in the records of the DNA and passed down to child cells. This made all the animals and plants in the world come into being. Starting with the simplest and working through sharks (apparently). And for some being sharks works, for others there were other things to explore, like land, a whole new niche to explore.

Eventually come mammals, and primates. Each taking ideas that worked before and improvising changes that might benefit exploration of new niches. And thus you get us.

Now this isn't to say it's planned what comes next or that it's a straight line. It's more like looking at Mars and saying lets try and live there too, and when we do we will find that certain adaptations happen over generations to make those people better at living in their environment, because they won't have the same struggles we will they may stop using capabilities that serve no purpose there, but they will face other challenges that we don't and they will get better at dealing with those. Then one day you could put one of us and one of them side by side and see we are very different creatures. Build to different gravity and different solar radiation levels, dietary needs and capabilities, senses, atmosphereic pressures and compositions, soil types, ect... they all play factors and they will be different from world to world and the more adaptation towards one style vs another the more evolutionarily distinct we are.

that much is known about evolution based on observation of the process in creatures all around us and modeling organic chemistry and generational genetic drift via adaptation. We don't have photograph of each stage of human development because they arn't stages, they are drifts in adaptive talents that build up to differences when compared to those that came thousands of years before. You are very different from the first person born in the cradle of humanity. And the thirteenth generation of your anscestors born on alpha centauri will be very different from you. Because we are evolvING, there is no dots to dot it's a blurred gradual smear of a process not neatly differenciated line segments.

This in no way compromises the amazing intricate nature of it, or requires abandonment of mystical or religious foundations to such wonder. But A wizard did it only amounts to "I don't understand so this is how I explain it." it's not an answer to the question, it's an avoidance of asking question. If you believe in a god or gods there is no death to the divine in studying and the labor and creation and rules by which the divine work.

[Raklian]

The fact that some asteroids/meterorites carried basic forms of amino acids also had something to do with the genesis of life on Earth. Scientists are starting to notice this.