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Anti-War - sirdroseph - Jun 28, 2016 - 2:41am
 
DARWIN AWARDS! - POST YOUR NOMINATION! - kurtster - Jun 27, 2016 - 11:11pm
 
Live Music - rhahl - Jun 27, 2016 - 10:55pm
 
All Dogs Go To Heaven - Dog Pix - kurtster - Jun 27, 2016 - 10:45pm
 
The war on Funk is over! - rhahl - Jun 27, 2016 - 10:41pm
 
Would you drive this car for dating with ur girl? - kurtster - Jun 27, 2016 - 10:33pm
 
Things You Thought Today - bokey - Jun 27, 2016 - 10:25pm
 
Country Up The Bumpkin - rhahl - Jun 27, 2016 - 10:25pm
 
Outstanding Covers - rhahl - Jun 27, 2016 - 10:14pm
 
Next life I'm going to be a black girl backup singer. - rhahl - Jun 27, 2016 - 9:34pm
 
What Makes You Laugh? - kctomato - Jun 27, 2016 - 9:01pm
 
Post your vacation pictures here! - KurtfromLaQuinta - Jun 27, 2016 - 8:53pm
 
Baseball, anyone? - ScottFromWyoming - Jun 27, 2016 - 7:47pm
 
Name My Band - haresfur - Jun 27, 2016 - 7:31pm
 
Dialing 1-800-Manbird - oldviolin - Jun 27, 2016 - 7:21pm
 
Gardeners Corner - haresfur - Jun 27, 2016 - 7:19pm
 
Computer geek thread for RP techno-freaks - haresfur - Jun 27, 2016 - 6:45pm
 
Acustic Guitar - rhahl - Jun 27, 2016 - 6:43pm
 
Unindicted felon: candidate Hillary Clinton - kctomato - Jun 27, 2016 - 5:28pm
 
Trump - R_P - Jun 27, 2016 - 5:11pm
 
Bernie Sanders 2016? - #feelthebern - Rod - Jun 27, 2016 - 5:11pm
 
Obama's Second Term - ScottN - Jun 27, 2016 - 4:34pm
 
HALF A WORLD - oldviolin - Jun 27, 2016 - 4:14pm
 
music that makes you dance with big wavy gestures - oldviolin - Jun 27, 2016 - 3:48pm
 
Best Song Comments. - ScottFromWyoming - Jun 27, 2016 - 3:04pm
 
Brexit - R_P - Jun 27, 2016 - 2:22pm
 
Back to the 70's - R_P - Jun 27, 2016 - 2:15pm
 
Robots - Alexandra - Jun 27, 2016 - 2:09pm
 
What Are You Grateful For? - Antigone - Jun 27, 2016 - 1:47pm
 
Photos you haven't taken of yourself - KurtfromLaQuinta - Jun 27, 2016 - 1:41pm
 
Chicken your way - Proclivities - Jun 27, 2016 - 12:27pm
 
The War on Women - R_P - Jun 27, 2016 - 12:01pm
 
Regarding dogs - R_P - Jun 27, 2016 - 11:46am
 
Game of Thrones - bokey - Jun 27, 2016 - 11:23am
 
Radio Paradise Comments - islander - Jun 27, 2016 - 10:35am
 
Gotta Get Your Drink On - Proclivities - Jun 27, 2016 - 10:07am
 
What Makes You Sad? - bokey - Jun 27, 2016 - 8:53am
 
Guns - westslope - Jun 27, 2016 - 8:50am
 
Shall We Dance? - ScottFromWyoming - Jun 27, 2016 - 8:23am
 
RP3 Beta Player - david63141 - Jun 27, 2016 - 8:11am
 
What Makes You Cry :) ? - DaveInVA - Jun 27, 2016 - 7:16am
 
Happy Birthday! - lily34 - Jun 27, 2016 - 6:20am
 
Today in History - Red_Dragon - Jun 27, 2016 - 6:10am
 
Wanna Race? - miamizsun - Jun 27, 2016 - 5:14am
 
NETFLIX - bokey - Jun 26, 2016 - 10:03pm
 
Movie Recommendation - Alexandra - Jun 26, 2016 - 9:07pm
 
• • • BRING OUT YOUR DEAD • • •  - oldviolin - Jun 26, 2016 - 8:53pm
 
Photography Forum - Your Own Photos; Please Limit to 510 ... - ScottFromWyoming - Jun 26, 2016 - 8:18pm
 
And the good news is.... - Alexandra - Jun 26, 2016 - 7:36pm
 
Regarding cats - DaveInVA - Jun 26, 2016 - 7:22pm
 
What makes you smile? - haresfur - Jun 26, 2016 - 6:21pm
 
Make aflanigan cry - Beaker - Jun 26, 2016 - 3:00pm
 
What are you doing RIGHT NOW? - Red_Dragon - Jun 26, 2016 - 2:28pm
 
• • • The Once-a-Day • • •  - oldviolin - Jun 26, 2016 - 12:48pm
 
Back to the 00's - R_P - Jun 26, 2016 - 11:45am
 
BACK TO THE 80's - aflanigan - Jun 26, 2016 - 11:13am
 
That's good advice - Prodigal_SOB - Jun 26, 2016 - 11:11am
 
Texas Music, Y'all! - aflanigan - Jun 26, 2016 - 10:57am
 
Counting with Pictures - ScottN - Jun 26, 2016 - 10:44am
 
Mixtape Culture Club - rmgman - Jun 26, 2016 - 9:11am
 
YouTube: Music-Videos - sirdroseph - Jun 26, 2016 - 7:10am
 
Back to the 60's - rhahl - Jun 26, 2016 - 6:55am
 
Positive Thoughts and Prayer Requests - 1000001786 - Jun 26, 2016 - 6:30am
 
The Global War on Terror - porphyrius - Jun 25, 2016 - 7:58pm
 
Public Messages in a Private Forum - Red_Dragon - Jun 25, 2016 - 3:53pm
 
260,000 Posts in one thread? - Lazy8 - Jun 25, 2016 - 3:50pm
 
2016 Elections - Beaker - Jun 25, 2016 - 2:27pm
 
Unusual News - aflanigan - Jun 25, 2016 - 1:19pm
 
The Obituary Page - R_P - Jun 25, 2016 - 12:06pm
 
Cryptic Posts - Leave Them Guessing - oldviolin - Jun 25, 2016 - 10:51am
 
Caretakers Of Our Parents - Alexandra - Jun 25, 2016 - 8:26am
 
Strips, cartoons, illustrations - R_P - Jun 24, 2016 - 7:45pm
 
Small-town news - Beaker - Jun 24, 2016 - 6:20pm
 
You Fail ! - DaveInVA - Jun 24, 2016 - 6:04pm
 
design • creative - Manbird - Jun 24, 2016 - 5:57pm
 
Index » Regional/Local » USA/Canada » Evolution! Page: 1, 2, 3 ... 116, 117, 118  Next
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Prodigal_SOB
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Posted: Jun 7, 2016 - 2:34pm


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Posted: May 18, 2016 - 5:26am

Complex life a billion years earlier than thought?
Organic fragments extracted from the host rock of the Gaoyuzhuang macroscopic fossils showing well-preserved cellular structure. Credit: Maoyan Zhu.
Researchers said Tuesday they had uncovered fossils showing that complex life on Earth began more than 1.5 billion years ago, nearly a billion years earlier than previously thought.

But the evidence, published in Nature Communications, immediately provoked debate, with some scientists hailing it as rock solid, and others saying they were wholly unconvinced.

After first emerging from the primordial soup, life remained primitive and unicellular for billions of years, but some of those cells eventually congregated like clones in a colony.

Scientists even took to calling the later part of this period the "boring billion", because evolution seemed to have stalled.

But at some point there was another huge leap—arguably second in importance only to the appearance of life itself—towards complex organisms.

This transition progressively gave rise to all the plants and animals that have ever existed.

Exactly when multi-cell eukaryotes—organisms in which differentiated cells each contain a membrane-bound nucleus with genetic material—showed up has inflamed scientific passions for many decades.

The new study is sure to enrich that tradition.

"Our discovery pushes back nearly one billion years the appearance of macroscopic, multicellular eukaryotes compared to previous research," Maoyan Zhu, a professor at the Nanjing Institute of Geology and Palaeontology, told AFP.

The fossils were uncovered in Hebei Province's Yanshan region, where Mao Zedong and his communist army hunkered down during World War II before coming to power.

Zhu and colleagues found 167 measurable fossils, a third of them in one of four regular shapes—an indication of complexity. (...)

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Posted: May 6, 2016 - 8:04pm

Fossil Hunters Uncover 71-Million-Year-Old Trove in Antarctica
After a plane flight, boat ride, helicopter lift and a lot of hiking, the scientists returned with a massive cache of fossils


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Posted: May 4, 2016 - 1:15am

Endangered venomous mammal predates dinosaurs' extinction, study confirms
Researchers have sequenced the mitochondrial genome of the endangered solenodon, a venomous insectivore that diverged from other living mammals 78 million years ago.

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Posted: Apr 9, 2016 - 7:34pm

In Science, It’s Never ‘Just a Theory’

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Posted: Mar 28, 2016 - 4:15pm

Top 10 Design Flaws in the Human Body
From our knees to our eyeballs, our bodies are full of hack solutions.
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Posted: Mar 17, 2016 - 3:49pm


Red_Dragon
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Posted: Mar 16, 2016 - 4:07pm

 R_P wrote:


 
I sincerely hope so.
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Posted: Mar 16, 2016 - 4:06pm


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Posted: Mar 14, 2016 - 3:43pm

Small, brainy tyrannosaur sheds light on how T. rex evolved
Horse-sized Timurlengia euotica lacked massive, bone-snapping teeth, but was agile, with good hearing

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Posted: Feb 17, 2016 - 5:40am

What Sparked the Cambrian Explosion?
An evolutionary burst 540 million years ago filled the seas with an astonishing diversity of animals. The trigger behind that revolution is finally coming into focus

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Posted: Feb 15, 2016 - 3:42pm

Mystery 'hobbits' not humans like us: study

Diminutive humans that died out on an Indonesian island some 15,000 years ago were not Homo sapiens but a different species, according to a study published Monday that dives into a fierce anthropological debate.

Fossils of Homo floresiensis—dubbed "the hobbits" due to their tiny stature—were discovered on the island of Flores in 2003.

Controversy has raged ever since as to whether they are an unknown branch of early humans or specimens of modern man deformed by disease.

The new study, based on an analysis of the skull bones, shows once and for all that the pint-sized people were not Homo sapiens, according to the researchers.

Until now, academic studies have pointing in one direction or another—and scientific discourse has sometimes tipped over into acrimony.

One school of thought holds that so-called Flores Man descended from the larger Homo erectus and became smaller over hundreds of generations.

The proposed process for this is called "insular dwarfing"—animals, after migrating across land bridges during periods of low sea level, wind up marooned on islands as oceans rise and their size progressively diminishes if the supply of food declines.

An adult hobbit stood a metre (three feet) tall, and weighed about 25 kilos (55 pounds).

Similarly, Flores Island was also home to a miniature race of extinct, elephant-like creatures called Stegodon.

But other researchers argue that H. floresiensis was in fact a modern human whose tiny size and small brain—no bigger than a grapefruit—was caused by a genetic disorder.

One suspect was dwarf cretinism, sometimes brought on by a lack of iodine. Another potential culprit was microcephaly, which shrivels not just the brain and its boney envelope.

Weighing in with a new approach, published in the Journal of Human Evolution, a pair of scientists in France used high-tech tools to re-examine the layers of the "hobbit" skull. (...)

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Posted: Feb 8, 2016 - 1:35pm

Human evolution is more a muddy delta than a branching tree

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Posted: Jan 15, 2016 - 5:00am

Grisly find suggests humans inhabited Arctic 45,000 years ago | Science | AAAS
To hunt mammoths in the Arctic, humans had to have the hunting tools, insulated clothes and shelter to survive in the Arctic.
Genetic data does not support ancient trans-Atlantic migration
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Posted: Jan 10, 2016 - 7:19am

Gene tweak led to humans’ big toe | Science News
Decrease in bone-building protein helped enable upright walking
TRUE BLUE The blue coloring in this mouse embryo shows that a genetic switch that controls production of a bone- and tissue-building protein turns on genes in the lower half of the embryo’s body.
Proclivities
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Posted: Nov 4, 2015 - 9:34am


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Posted: Sep 20, 2015 - 5:08pm

'Tree of life' for 2.3 million species released
Large, open-access resource aims to be 'Wikipedia' for evolutionary history

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Posted: Sep 19, 2015 - 3:03pm

Is Homo naledi just a primitive version of Homo erectus? · John Hawks

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Posted: Sep 15, 2015 - 10:01pm

Humans aren’t so special after all: The fuzzy evolutionary boundaries of Homo sapiens
Recent discoveries point to shared traits and blurred borders with our closest relatives.
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Posted: Sep 12, 2015 - 12:16pm

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