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Radio Paradise Comments - miamizsun - Jun 19, 2021 - 7:45am
 
Positive Thoughts and Prayer Requests - miamizsun - Jun 19, 2021 - 7:43am
 
• • • The Once-a-Day • • •  - Proclivities - Jun 19, 2021 - 6:57am
 
Today in History - Red_Dragon - Jun 19, 2021 - 6:19am
 
What Makes You Laugh? - Blackbirds - Jun 19, 2021 - 6:01am
 
The Obituary Page - Ohmsen - Jun 18, 2021 - 11:34pm
 
• • • BRING OUT YOUR DEAD • • •  - oldviolin - Jun 18, 2021 - 10:41pm
 
COVID-19 - R_P - Jun 18, 2021 - 10:29pm
 
Live Music - oldviolin - Jun 18, 2021 - 7:09pm
 
King Crimson - Steely_D - Jun 18, 2021 - 7:00pm
 
Play the Blues - oldviolin - Jun 18, 2021 - 6:42pm
 
If not RP, what are you listening to right now? - Steely_D - Jun 18, 2021 - 6:39pm
 
Great drummers - oldviolin - Jun 18, 2021 - 6:31pm
 
RP app for MacBook Pro 16 not compatible? - gtufano - Jun 18, 2021 - 11:29am
 
Music documentaries - R_P - Jun 18, 2021 - 10:37am
 
Great Old Songs You Rarely Hear Anymore - Proclivities - Jun 18, 2021 - 9:23am
 
Mixtape Culture Club - Lazy8 - Jun 18, 2021 - 7:22am
 
Republican Party - rgio - Jun 18, 2021 - 5:34am
 
Jazz - Proclivities - Jun 18, 2021 - 5:12am
 
YouTube: Music-Videos - sirdroseph - Jun 18, 2021 - 4:58am
 
Counting with Pictures - ScottN - Jun 18, 2021 - 4:20am
 
Chicago 25 Or 6 To 4 - Coaxial - Jun 17, 2021 - 7:44pm
 
Country Up The Bumpkin - oldviolin - Jun 17, 2021 - 6:52pm
 
Climate Change - Red_Dragon - Jun 17, 2021 - 6:32pm
 
Derplahoma! - Red_Dragon - Jun 17, 2021 - 4:27pm
 
OBAMACARE - Lazy8 - Jun 17, 2021 - 4:12pm
 
Pernicious Pious Proclivities Particularized Prodigiously - Red_Dragon - Jun 17, 2021 - 2:53pm
 
How to stop autopaly in iOS - gtufano - Jun 17, 2021 - 2:51pm
 
New Music - R_P - Jun 17, 2021 - 1:50pm
 
Name My Band - oldviolin - Jun 17, 2021 - 1:01pm
 
Race in America - R_P - Jun 17, 2021 - 1:00pm
 
what the hell, miamizsun? - oldviolin - Jun 17, 2021 - 12:51pm
 
Talk Behind Their Backs Forum - VV - Jun 17, 2021 - 10:13am
 
Post your favorite 'You Tube' Videos Here - Red_Dragon - Jun 17, 2021 - 10:06am
 
Cryptic Posts - Leave Them Guessing - oldviolin - Jun 17, 2021 - 9:17am
 
In the Know - oldviolin - Jun 17, 2021 - 9:15am
 
Movie quotes used as life's truisms - oldviolin - Jun 17, 2021 - 9:07am
 
Media Bias - sirdroseph - Jun 17, 2021 - 4:50am
 
Museum Of Bad Album Covers - yuel - Jun 17, 2021 - 12:25am
 
Things You Thought Today - miamizsun - Jun 16, 2021 - 7:16pm
 
Putin Owns Trump - rgio - Jun 16, 2021 - 2:31pm
 
Joe Biden - R_P - Jun 16, 2021 - 12:14pm
 
Evolution! - R_P - Jun 16, 2021 - 9:56am
 
Last gas price paid? - NoEnzLefttoSplit - Jun 16, 2021 - 4:43am
 
2020 Elections - Steely_D - Jun 15, 2021 - 8:44pm
 
Trump Lies™ - kcar - Jun 15, 2021 - 7:02pm
 
bummed - Red_Dragon - Jun 15, 2021 - 3:50pm
 
Trump - R_P - Jun 15, 2021 - 1:52pm
 
Insane-looking Lawyers - rhahl - Jun 15, 2021 - 11:55am
 
Military Matters - Red_Dragon - Jun 15, 2021 - 5:04am
 
What Did You See Today? - KurtfromLaQuinta - Jun 14, 2021 - 5:27pm
 
What Did You Do Today? - KurtfromLaQuinta - Jun 14, 2021 - 5:25pm
 
DQ (as in 'Daily Quote') - oldviolin - Jun 14, 2021 - 4:39pm
 
• • • Clownstock • • •  - kcar - Jun 14, 2021 - 3:25pm
 
The Global War on Terror - Ohmsen - Jun 14, 2021 - 2:40pm
 
Bad Poetry - GeneP59 - Jun 14, 2021 - 2:13pm
 
The war on funk is over! - rhahl - Jun 14, 2021 - 12:41pm
 
It's fine - Lazy8 - Jun 14, 2021 - 7:42am
 
punk? hip-hop? metal? noise? garage? - rhahl - Jun 14, 2021 - 5:53am
 
What is the meaning of this? - rhahl - Jun 14, 2021 - 5:32am
 
The Geek Thread - Proclivities - Jun 14, 2021 - 5:04am
 
2022 Elections - haresfur - Jun 14, 2021 - 12:33am
 
Graphs, Charts & Maps - R_P - Jun 13, 2021 - 9:05pm
 
Kodi Addon - Ohmsen - Jun 13, 2021 - 2:40pm
 
China - R_P - Jun 13, 2021 - 2:31pm
 
Lounge - Chill-Out - Down-Tempo - Steely_D - Jun 13, 2021 - 1:45pm
 
Floyd forum - Steely_D - Jun 13, 2021 - 9:26am
 
Vinyl Only Spin List - KurtfromLaQuinta - Jun 12, 2021 - 9:22pm
 
Magpie Salute - merseywest - Jun 12, 2021 - 7:38pm
 
Movie Recommendation - rhahl - Jun 12, 2021 - 4:52pm
 
Poetry Forum - Antigone - Jun 12, 2021 - 3:55pm
 
Lyrics that strike a chord today... - oldviolin - Jun 12, 2021 - 3:16pm
 
100 Things You Can Say To Irritate A Republican - Manbird - Jun 12, 2021 - 2:49pm
 
Tech & Science - Red_Dragon - Jun 12, 2021 - 7:30am
 
Democratic Party - Red_Dragon - Jun 11, 2021 - 8:02pm
 
Index » Regional/Local » USA/Canada » Evolution! Page: Previous  1, 2, 3, ... 120, 121, 122  Next
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Posted: Jul 17, 2020 - 7:54pm

How Viruses Evolve
Pathogens that switch to a new host species have some adapting to do. How does that affect the course of a pandemic like COVID-19?
(...) This evolutionary two-step — first spillover, then adaptation to the new host — is probably characteristic of most viruses as they shift hosts, says Daniel Streicker, a viral ecologist at the University of Glasgow. If so, emerging viruses probably pass through a “silent period” immediately after a host shift, in which the virus barely scrapes by, teetering on the brink of extinction until it acquires the mutations needed for an epidemic to bloom.

Streicker sees this in studies of rabies in bats — which is a good model for studying the evolution of emerging viruses, he says, since the rabies virus has jumped between different bat species many times. He and his colleagues looked at decades’ worth of genetic sequence data for rabies viruses that had undergone such host shifts. Since larger populations contain more genetic variants than smaller populations do, measuring genetic diversity in their samples enabled the scientists to estimate how widespread the virus was at any given time.

The team found that almost none of the 13 viral strains they studied took off immediately after switching to a new bat species. Instead, the viruses eked out a marginal existence for years to decades before they acquired the mutations — of as yet unknown function — that allowed them to burst out to epidemic levels. Not surprisingly, the viruses that emerged the fastest were those that needed the fewest genetic changes to blossom.

SARS-CoV-2 probably passed through a similar tenuous phase before it acquired the key adaptations that allowed it to flourish, perhaps the mutation to the polybasic cleavage site, perhaps others not yet identified. In any case, says Colin Parrish, a virologist at Cornell University who studies host shifts, “by the time the first person in Wuhan had been identified with coronavirus, it had probably been in people for a while.”

It was our bad luck that SARS-CoV-2 adapted successfully. Many viruses that spill over to humans never do. About 220 to 250 viruses are known to infect people, but only about half are transmissible — many only weakly — from one person to another, says Jemma Geoghegan, an evolutionary virologist at the University of Otago, New Zealand. The rest are dead-end infections. Half is a generous estimate, she adds, since many other spillover events probably fizzle out before they can even be counted. (...)

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Posted: May 2, 2020 - 8:34pm

My, what big teeth and strange bones you have. Scientists discover a creature that roamed south of the equator 66 million years ago
Sixty-six million years ago, before the age of dinosaurs came to a fiery close, most mammals were puny and shrew-like. Which means a newly described Madagascar critter, though the size of a groundhog, was a giant of its day. And it packed a titan’s worth of oddities into its 7-pound frame.

The ancient animal’s fossils, the oldest mammal skeleton found in the Southern Hemisphere, show teeth and bones unlike anything seen before or since. “It’s a game-changer,” said Ohio University paleontologist Patrick M. O’Connor, who was not a part of the study. Though the researchers found a single skeleton, O’Connor said its remarkable preservation let scientists analyze the mammal in ways they previously “could only dream of."

An international team of scientists, including researchers in Madagascar and the United States, described the animal in the journal Nature on Wednesday. They named it Adalatherium hui — the first name, its genus, translates to “crazy beast”; the second, the species name, is in honor of the deceased mammalian scientist Yaoming Hu.

Adalatherium helps fill in the gaps of mammalian evolution that occurred during the time of the dinosaurs. Scientists know quite a bit about mammals from the Northern Hemisphere, especially China, O’Connor said. But that knowledge vanishes south of the equator.

Until 180 million years ago, the familiar continents of the Southern Hemisphere were mashed together in a landmass known as Gondwana. The mammals that lived there, which scientists call gondwanatherians, were known only from scattered fragments of jaw, teeth and a lone skull. Until this discovery. (...)

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Posted: Feb 25, 2020 - 2:32pm

 sirdroseph wrote:
Someone posted this on FB the other day and I have always known that oppression is part of natural human evolution.  The European colonization version is but a part of the overall phenomenon.   This articulates the positive evolutionary side effect of this and we are in the midst of this pendulum swing right now.  Hold on tightly, the cycle will be perpetual until we evolve spiritually enough to stop it though personally I think we will become extinct before we reach this level, but one can always hope.

"Humans have targeted other groups for as long as humanity has existed. The adversity that this creates for the targeted groups eventually causes them to resist and rise up in tenacity and determination and accomplishment. And at some point throughout history, the targeted almost always become the targeters, and then those people will eventually rise up in defiance. Adversity is a primary driver of longterm human development and achievement through the ages."

Social Darwinism
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Posted: Feb 25, 2020 - 4:52am

Someone posted this on FB the other day and I have always known that oppression is part of natural human evolution.  The European colonization version is but a part of the overall phenomenon.   This articulates the positive evolutionary side effect of this and we are in the midst of this pendulum swing right now.  Hold on tightly, the cycle will be perpetual until we evolve spiritually enough to stop it though personally I think we will become extinct before we reach this level, but one can always hope.

 

"Humans have targeted other groups for as long as humanity has existed. The adversity that this creates for the targeted groups eventually causes them to resist and rise up in tenacity and determination and accomplishment. And at some point throughout history, the targeted almost always become the targeters, and then those people will eventually rise up in defiance. Adversity is a primary driver of longterm human development and achievement through the ages."

 

 

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Posted: Feb 23, 2020 - 5:05pm

OM
Gee

 R_P wrote:
Fossil ape hints at how walking on two feet evolved
Approximately 11.6-million-year-old fossils reveal an ape with arms suited to hanging in trees but human-like legs, suggesting a form of locomotion that might push back the timeline for when walking on two feet evolved.

 


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Posted: Feb 23, 2020 - 4:59pm

You can’t fight feelings with facts: start with a chat
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Posted: Jan 31, 2020 - 10:24pm

Slime Molds Have Been Oozing around Earth for at Least 100 Million Years
Stunning new fossil reveals that at least one Cretaceous slime mold—an “intelligent” giant amoeba—looks identical to one alive today
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Posted: Dec 9, 2019 - 11:09pm


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Posted: Nov 18, 2019 - 12:39pm


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Posted: Nov 7, 2019 - 5:26am

 R_P wrote: 
according to my genomic test results

i've got mucho neanderthal variants

and some days i feel like they're steering the ship




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Posted: Nov 6, 2019 - 3:19pm

Fossil ape hints at how walking on two feet evolved
Approximately 11.6-million-year-old fossils reveal an ape with arms suited to hanging in trees but human-like legs, suggesting a form of locomotion that might push back the timeline for when walking on two feet evolved.

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Posted: Oct 19, 2019 - 3:40pm

Modern Humans Inherited Even More DNA from Neanderthals and Denisovans Than We Thought
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Posted: Oct 7, 2019 - 5:09am

The Clitoris is not a button, it is an iceberg

Perk up your usual Monday morning 
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Posted: Oct 1, 2019 - 8:15pm

250-million-year-old evolutionary remnants seen in muscles of human embryos
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Posted: Aug 28, 2019 - 10:23am

Line graph. Americans’ opinions of God’s role in the origin and development of human beings, since 1982.

The latest findings
, from a June 3-16 Gallup poll, have not changed significantly from the last reading in 2017. However, the 22% of Americans today who do not believe God had any role in human evolution marks a record high dating back to 1982. This figure has changed more than the other two have over the years and coincides with an increasing number of Americans saying they have no religious identification.

As many as 47% and as few as 38% of Americans have taken a creationist view of human origins throughout Gallup's 37-year trend. Likewise, between 31% and 40% of U.S. adults have attributed humans' development to a combination of evolution and divine intervention over the same period.
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Posted: Jul 24, 2019 - 11:26am

The Dinosaur That Started a Craze
The story of the fossil formerly known as Scrotum humanum.
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Posted: Jul 20, 2019 - 12:37pm


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Posted: Jun 27, 2019 - 12:54pm

Move over, DNA: ancient proteins are starting to reveal humanity’s history
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Posted: Jun 7, 2019 - 4:19pm

Closest-known ancestor of today’s Native Americans found in Siberia
Indigenous Americans, who include Alaska Natives, Canadian First Nations, and Native Americans, descend from humans who crossed an ancient land bridge connecting Siberia in Russia to Alaska tens of thousands of years ago. But scientists are unclear when and where these early migrants moved from place to place. Two new studies shed light on this mystery and uncover the most closely related Native American ancestor outside North America.

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Posted: May 23, 2019 - 10:22am

Billion-year-old fossils set back evolution of earliest fungi
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