[shrinkermd]

I'll think about this before I go to sleep.

[sine_nomine]

God created through His Word.

Now everyone can sleep.

[Coyoteman]

Interesting.

Thanks!

[magellan]

Okay, so oxygen creates life, rather than just sustains life which is already created. Well I think I'll just buy Michael Jackson's hyperbaric oxygen chamber and stick my dead relatives in it and reanimate their dead flesh.

I bet these scientists believe maggots come from rotting meat.

[LiteKeeper]

YEC INTREP

[Ilky Hucktar]

Life is change.

[ProtectOurFreedom]

So melting glaciers caused an explosion in complex animal life-forms. It seems we are melting the remaining glaciers right now. So what complex life-forms come next?

[docbnj]

This is a very significant hypothesis to explain the "Cambrian explosion" of biodiversity.

It is naturally a bit confusing to the scientifically illiterate, as some of the foregoing posts indicate.

The mention of the "iceball" refers to the idea that the late Precambrian was a time of almost worldwide glaciation. Then the ice melted. Through global warming. And humans were not even around. Al Gore, take note!

[Popocatapetl]

Free oxygen can only exist when there is no active molecule to bind it. This accounts for the extended period in which there was only single celled anaerobic bacteria in the oceans--there was an incredible amount of atmospheric iron that had to be fixed as iron oxide by the waste product of the bacteria, before oxygen could accumulate.

This resulted in a huge geological band of rust in much of the world. And when the iron was finally fixed, the percentage of oxygen in the atmosphere multiplied. And once there was enough oxygen in the atmosphere, oxygen levels in the oceans increased so much that bacteria had to evolve to live around it.

Now, this took place long before the events discussed in the article, but it took a vast amount of time.

[M-cubed]

This began an evolutionary radiation that led to complex communities of filter-feeding animals, then mobile bilateral animals, and ultimately to the Cambrian “explosion” of skeletal animals 542 million years ago.<<<

542 MILLION yrs ago....and my friend questions God because he didn't get instant results....

[jwalsh07]

The sudden appearance of large animal fossils more than 500 million years ago – a problem that perplexed even Charles Darwin and is commonly known as “Darwin’s Dilemma” – may be due to a huge increase of oxygen in the world’s oceans, says Queen’s paleontologist Guy Narbonne, an expert in the early evolution of animals and their ecosystems.

OK Darwins dilemna is "the sudden appearance of large animal fossils". Fine, dilemnas happen.

Now we have a hypothesis that states that the level of O2 and nutrients increased dramatically at some point for some reason. OK fine there as well.

Darwinian evolution, RM/NS/heritability, posits small changes over long periods of time. So, I'll need somebody to help me out with how increases in O2 and nutrient levels explains "the sudden appearance of large animal fossils".

[onedoug]

Interesting. Thanks.

[hosepipe]

Darwin’s Dilemma = The more educated a human gets, the more he/she is drawn to fables..

[finnigan2]

"Life appeared due to, due to.... oxygen - yeah, that's the ticket."

[TenthAmendmentChampion]

Once upon a time...

[Elsie]

They hypothesize that melting glaciers increased the amount of nutrients in the ocean ...

Before Global warming, we had Nuclear Winter: Glaciers caused, no doubt, by warmongering microbes!

[Elsie]

Before we had t-shirts reading "Free the Five" (http://www.freethefive.org/) there were tiny micro-sized ones reading "Free Oxygen!" according to the discovery of the tiny fossils last Thursday.

--EvoDude

[FFIGHTER]

Genesis 6:4 There were giants in the earth in those days; and also after that, when the sons of God came in unto the daughters of men.

Numbers 13:33 And there we saw the giants ... And we were in our own sight as grasshopper, and so we were in their sight.

Deuteronomy 2:10-11 The Emims dwelt therein in times past, a people great, and many, and tall, as the Anakims; Which also were accounted giants.

Deuteronomy 2:20-21 That also was accounted a land of giants: giants dwelt therein in old time.... A people great, and many, and tall, as the Anakims; but the LORD destroyed them.

Deuteronomy 3:11 For only Og king of Bashan remained of the remnant of giants; behold his bedstead was ... nine cubits was the length thereof, and four cubits the breadth of it. /S

[Psycho_Bunny]

They hypothesize that melting glaciers increased the amount of nutrients in the ocean and led to a proliferation of single-celled organisms that liberated oxygen through photosynthesis.

It seems just as likely that the temperature increase that melted the glaciers allowed for an extended range of ocean-going, oxygen producing microorganisms.  

Or there was a combination of both.

[BlueNgold]

But where did the single cell animals come from?
And where did the water come from?
And how did the water freeze? Then melt?