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Index » Regional/Local » USA/Canada » Evolution! Page: Previous  1, 2, 3, ... 107, 108, 109  Next
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miamizsun

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Location: (3261.3 Miles SE of RP)
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Posted: Nov 3, 2012 - 11:02am

 RichardPrins wrote: 
pardon, but i didn't see manbird in this chart/tree

we need a citation
Monkeysdad
Ceiling fans and coasters...distribute them equitably today.....
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Posted: Nov 2, 2012 - 10:09pm

 RichardPrins wrote: 



Awesome! Thank you RP!
RichardPrins

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Posted: Nov 2, 2012 - 10:02pm

First ever family tree for all living birds reveals evolution and diversification

Click image for larger version
RichardPrins

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Posted: Oct 24, 2012 - 9:27am

Is god a bacterium?

Did bacteria spark evolution of multicellular life?

Triggered by the presence of bacteria, the single-celled choanoflagellate Salpingoeca rosetta divides and aggregates with its sisters to form a colony. One reason may be that the colony is a more efficient way of capturing food, like a “Death Star” sitting amidst the bacteria and chowing down. The colony is about 15 microns in diameter, or less than one-thousandth of an inch across. Scanning electron microscope image courtesy of Nicole King.
RichardPrins

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Posted: Oct 12, 2012 - 2:20am

Kenneth Miller on Arguments against Creationism | FiveBooks | The Browser
The biology professor, and Catholic, tells us what we should read to understand the battle being fought between scientists and creationists
Umberdog

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Location: In my body.
Gender: Male
Zodiac: Gemini
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Posted: Oct 6, 2012 - 3:51pm

 RichardPrins wrote:
Congressman calls evolution lie from 'pit of hell'
Georgia Rep. Paul Broun said in videotaped remarks that evolution, embryology and the Big Bang theory are "lies straight from the pit of hell" meant to convince people that they do not need a savior. (...)

Broun spokeswoman Meredith Griffanti told the Athens Banner-Herald that Broun was recorded speaking off-the-record to a church group about his religious beliefs. He sits on the House Committee on Science, Space and Technology. (...)
 
God sure makes a lot of stupid people. So such for intelligent design. Yes, this is sarcasm.
RichardPrins

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Posted: Oct 6, 2012 - 3:45pm

Congressman calls evolution lie from 'pit of hell'
Georgia Rep. Paul Broun said in videotaped remarks that evolution, embryology and the Big Bang theory are "lies straight from the pit of hell" meant to convince people that they do not need a savior. (...)

Broun spokeswoman Meredith Griffanti told the Athens Banner-Herald that Broun was recorded speaking off-the-record to a church group about his religious beliefs. He sits on the House Committee on Science, Space and Technology. (...)

RichardPrins

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Posted: Sep 14, 2012 - 5:31pm

For How Long Have We Been Human? : 13.7: Cosmos And Culture : NPR
(...) 6-7 million years ago: Start of the human lineage, following a split with the lineage containing chimpanzees and gorillas

2.6 mya: Onset of large-scale making and use of stone tool technology

2.5 mya: First human ancestors in our own genus, Homo

200,000 years ago: First modern humans, Homo sapiens

30,000: Cave paintings and rock paintings begin to emerge on multiple continents

Around 12,000: Onset of agriculture and human settlements. Up until this period, all human groups lived by hunting and gathering. (This transition was neither linear nor simple.)

Does one date, midway in the pack, snag the eye? 200,000 years ago, Homo sapiens emerged.

That's us.

But can we really affix a date to becoming human? Here's a question too complex for first-day-of-class lists. I've written elsewhere that I love my field because doing anthropology so often starts with agitated questions. "For how long have we been human?" surely counts as one of those.

The 200,000 date refers to the earliest known anatomically modern humans, skeletons found at places like Omo and Herto in Ethiopia. They represent people with slender body types, high foreheads, and reduced brow ridges compared to Neanderthals or earlier human ancestors.

But no one would argue that becoming human is about anatomy.

And who's to say that Neanderthals, though a different species, weren't human? They looked different from us — more robust, with thicker and strong bones and a different shape skull. But they made sophisticated tools and, at least in some places, thought symbolically and buried their dead. Neanderthals co-existed with us, and as we're just finding out, so did the Denisovan people living in Siberia tens of thousands of years ago.

So when did modern behavior emerge? Talk about fraught questions! (...)
A piece of red ochre with a deliberately engraved design is pictured here at Cape Town's Iziko/South African Museum in 2002. The piece was discovered in Blombos Cave near Stilbaai, about 300 kilometers from Cape Town.

RichardPrins

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Posted: Sep 14, 2012 - 12:20pm

Sands of time date layers of human life
Geochronologist Zenobia Jacobs explains how ancient grains of sand may unlock the secrets of where we came from and what makes us human.

RichardPrins

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Posted: Sep 11, 2012 - 5:54pm

Evolution Beats Creationism in South Korea Textbook Battle | Wired Science | Wired.com
There’s been a victory for sense and science in South Korea, as the government there has rejected calls to drop references to the evolution of birds from the national school curriculum.

As previously reported on Wired.co.uk, pressure group Society for Textbook Revise had managed to persuade textbook publishers to drop sections from their books that discussed the evolution of horses and the Jurassic-era early avian-like dinosaur Archaeopteryx.

Now, however, a special panel convened by the South Korean government has recommended that the publishers ignore the creationists’ arguments — which should mean that textbooks reintroduce the old segments before the start of the next school year.

The argument of the Society for Textbook Revise — an offshoot of the Korea Association for Creation Research — rested on there being debate among evolutionary scientists over whether Archaeopteryx could fly, or glide, or merely had feathers for decoration. This disagreement was extrapolated to cast doubt on the whole evolutionary history of birds.

In response, South Korea’s Ministry of Education, Science and Technology set up a panel experts to assess the campaign’s claims. They disagreed that their Archaeopteryx objection was a valid argument, and said it should remain in the textbooks. The campaign group also claimed that a section on the evolution of the horse was too simplistic, which the panel agreed with — but they have merely recommended replacing it with a more thorough explanation, or a new section on the evolution of another animal like the whale.

Creationism is a growing issue in South Korea, which has experienced a surge in evangelical Christianity over the past few decades — over 20 percent of South Koreans claim some kind of Christian faith as of 2005, and a 2009 survey found 41 percent of those asked said they didn’t think there was sufficient evidence to support evolution as a theory.

RichardPrins

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Posted: Sep 9, 2012 - 4:59pm

Here is a horseshoe crab from the Jurassic Period, beautifully preserved and discovered in the famous Solnhofen Lithographic Limestone of Bavaria in Germany. What makes this fossil significant, however, is the series of tracks that run behind the animal. You can see some of the tracks in this photo, but the actual line of preserved tracks runs for an astonishing 9.7 m (31.8 ft)! The link to a high-resolution version of the full fossil can be found below.  What you're seeing is the poor horseshoe crab's last steps, or in other words, its "death march." Scientists believe that this animal was somehow flung or fell into an anoxic (or low-oxygen) lagoon, and its landing site on the bottom of the lagoon is well preserved. The series of tracks then shows that the animal righted itself, got to its feet, and began to walk. The harsh conditions of the lagoon began to take a toll on the animal, as its walking patterns began to change. The animal's steps be came erratic, the telson (or tail) flipped up and down as it walked, its head dipped into the sediment a few times, and finally, the animal slowed down and died.  The whole event may of lasted a few minutes, but it is now preserved forever, and it is helping scientists piece together how this animal would have behaved around 150 million years ago. Awesome!
RichardPrins

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Posted: Sep 7, 2012 - 3:29pm

2012 Richard Dawkins Award goes to Eugenie Scott
aflanigan

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Posted: Sep 6, 2012 - 9:37am

 Isabeau wrote:

"We can't solve problems by using the same kind of thinking we used when we created them."  — A. Einstein 

 

The process of evolution is not one that directly involves thinking (i.e. rationality) as we understand it. So evolution can't be said to "solve problems" using "thinking", can it?


Isabeau
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Location: sou' tex
Gender: Female
Zodiac: Libra
Chinese Yr: Monkey


Posted: Sep 6, 2012 - 8:33am

 aflanigan wrote:


Winning and losing are in the eye of the beholder.  We are simply changing, and that inevitably.

 
"We can't solve problems by using the same kind of thinking we used when we created them."  — A. Einstein 
aflanigan

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Location: Downstairs at Downton
Gender: Male
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Posted: Sep 6, 2012 - 8:28am

 miamizsun wrote:
in every evolution there are winners and there are losers

are we winning yet? {#Wink}

 

Winning and losing are in the eye of the beholder.  We are simply changing, and that inevitably.
ErikX

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Location: I hope we shall take warning from the example and crush in its birth the aristocracy of our monied corporations which dare already to challenge our government to a trial of strength and bid defiance to the laws of our country. -- Thomas Jefferson, 1816


Posted: Sep 5, 2012 - 5:00pm

 RichardPrins wrote:
Joseph Henrich: How Culture Drove Human Evolution | Conversation | Edge
Part of my program of research is to convince people that they should stop distinguishing cultural and biological evolution as separate in that way. We want to think of it all as biological evolution.

 
Interesting stuff.  .............."We have no innate fire-making ability. But once you got this idea for cooking and making fires to be culturally transmitted, then it created a whole new selection pressure that made our stomachs smaller, our teeth smaller, our gapes or holdings of our mouth smaller, it altered the length of our intestines. It had a whole bunch of downstream effects."
RichardPrins

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Posted: Sep 5, 2012 - 4:26pm

Joseph Henrich: How Culture Drove Human Evolution | Conversation | Edge
Part of my program of research is to convince people that they should stop distinguishing cultural and biological evolution as separate in that way. We want to think of it all as biological evolution.
RichardPrins

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Posted: Sep 4, 2012 - 8:25pm

Furry Mammals Evolved a Tuned Spin Dry

miamizsun

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Location: (3261.3 Miles SE of RP)
Gender: Male


Posted: Aug 31, 2012 - 10:43am

in every evolution there are winners and there are losers

are we winning yet? {#Wink}
RichardPrins

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Posted: Aug 31, 2012 - 10:35am

Genome Brings Ancient Girl to Life | Wired Science | Wired.com
This replica of a tiny finger bone from Denisova Cave yielded an entire genome. Photo: Max Planck Institute for Evolutionary Anthropology
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