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“Pissing people off since 1949”

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#939 Jan 10, 2013
Kong_ wrote:
<quoted text>
"Battle Barf Bots"?
Hell, I'd pay to see that!

“Pissing people off since 1949”

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Seffner, FL

#940 Jan 11, 2013
As the article begins, "You can't make this crap up"

http://www.salon.com/2013/01/10/disgusting_sc...

Brownies, anyone?

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#941 Jan 13, 2013

“There is no such thing”

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#942 Jan 14, 2013
nanoanomaly wrote:
http://phys.org/news/2013-01-a stronomers-largest-universe.ht ml
Size matters.
They lie.

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#943 Jan 14, 2013
Lil Ticked wrote:
<quoted text>They lie.
Who are these liars you speak of?

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#944 Jan 14, 2013
nanoanomaly wrote:
<quoted text>Who are these liars you speak of?
Those that say that size matters.. those bastitches

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#945 Jan 14, 2013
Lil Ticked wrote:
<quoted text>Those that say that size matters.. those bastitches
Um...it wasn't that kind of link.

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#946 Jan 15, 2013
nanoanomaly wrote:
<quoted text>Um...it wasn't that kind of link.
http://phys.org/news/2011-05-mini-black-holes...

“Nihil curo de ista tua stulta ”

Since: May 08

Orlando

#947 Jan 15, 2013
More about Comet ISON from Phys.org :

http://phys.org/news/2013-01-comet-ison-spect...

"( Phys.org )—Excitement is mounting for astronomers and star gazers the world over as word spreads that Comet ISON may go down in the history books as one of the flashiest ever. First discovered in September of last year by Russian astronomers, Vitali Nevski and Artyom Novichonok, Comet ISON (C/2012 S1) has been drawing attention ever since.

Comets, as most are well aware, are balls of ice and rock that move though space – when they get close enough to the sun, they sprout tails giving rise to poetic descriptions of beauty by some and claims of mystical phenomenon by others. Comet ISON is expected to be at its brightest in late November of this year, leading some to link it with the Star of Bethlehem which the Bible says led the three wise men to the newborn baby Jesus. Its perihelion – closest approach to the sun – is expected to occur on November 28 and the comet will likely be best viewed in the northern hemisphere.

Of course, projecting the brilliance of a comet or its tail length is an iffy proposition to be sure. It could just break apart when it nears the sun (it's expected to come as close as 32,000 miles), leaving us here on Earth less than impressed with the results,(see Comet Kohoutek - 1973.) More optimistically, because of its size and orientation, it might just present us with the brightest comet show ever seen.

Right now Comet ISON is in Jupiter's orbit, hurtling towards a rendezvous with the sun. As it approaches, bits of it will be vaporized, leading to the creation of a tail. Once it arrives, it will whip around the sun at approximately 425,000 mph and then head back into space passing our planet on its way, allowing us to see it in all its finery.

The best viewing time for the comet is expected to be early in the morning before the sun comes up, as it approaches, and then at both pre-dawn and just after the sun sets as the comet is leaving. When it's approaching, its tail will follow behind it, but as it's leaving, due to solar wind, it will be following its own tail. Estimates on Comet ISON's brightness vary – some suggest it might be equal in luminescence to the planet Mars, while others hint that it might be as bright as the moon, which means it would be visible even during daylight hours."

<<end cut/paste>>

SOOOOOO anxious to see this comet! I've been less than impressed with the ones I've had the opportunity to see thus far.

On another note: In the 'comments' section for this article, one of the posters asked 'when the first DOOMSDAY prophecy' regarding ISON will be put forth.

Over/Under.....July 1?

“There is no such thing”

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#948 Jan 16, 2013

“Pissing people off since 1949”

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#949 Jan 23, 2013
Not exactly science news (unless you want to include animal behavior) but pretty cool nonetheless:

http://travel.aol.co.uk/2013/01/23/amazing-vi...

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#950 Jan 23, 2013
Not exactly science...

http://earthsky.org/earth/awesome-video-of-do...

...but I was doing sciencey stuff when I came across this video.

;)

“Pissing people off since 1949”

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#951 Jan 23, 2013
nanoanomaly wrote:
Not exactly science...
http://earthsky.org/earth/awesome-video-of-do...
...but I was doing sciencey stuff when I came across this video.
;)
Amazing!

“Nihil curo de ista tua stulta ”

Since: May 08

Orlando

#952 Jan 23, 2013
KINDA 'Evolution-related':

Retrovirus in the human genome is active in pluripotent stem cells
January 23rd, 2013 in Medical research

A retrovirus called HERV-H, which inserted itself into the human genome millions of years ago, may play an important role in pluripotent stem cells, according to a new study published in the journal Retrovirology by scientists at UMass Medical School. Pluripotent stem cells are capable of generating all tissue types, including blood cells, brain cells and heart cells. The discovery, which may help explain how these cells maintain a state of pluripotency and are able to differentiate into many types of cells, could have profound implications for therapies that would use pluripotent stem cells to treat a range of human diseases.

"What we've observed is that a group of endogenous retroviruses called HERV-H is extremely busy in human embryonic stem cells," said Jeremy Luban, MD, the David L. Freelander Memorial Professor in HIV/AIDS Research, professor of molecular medicine and lead author of the study. "In fact, HERV-H is one of the most abundantly expressed genes in pluripotent stem cells and it isn't found in any other cell types."

In the study, Dr. Luban and colleagues describe how RNA from the HERV-H sequence makes up as much as 2 percent of the total RNA found in pluripotent stem cells. The HERV-H sequence is controlled by the same factors that are used to reprogram skin cells into induced pluripotent stem (iPS) cells, a discovery that garnered the 2012 Nobel Prize in Physiology or Medicine. "In other words, HERV-H is a new marker for pluripotency in humans that has the potential to aid in the development of iPS cells and transform current stem cell technology," said Luban.

When a retrovirus infects a cell, it inserts its own genes into the chromosomal DNA of the host cell. As a result, the host cell treats the viral genome as part of its own DNA sequence and begins making the proteins required to assemble new copies of the virus. And because the retrovirus is now part of the host cell's genome, when the cell divides, the virus is inherited by all daughter cells.

In rare cases, it's believed that retroviruses can infect human sperm or egg cells. If this happens, and if the resulting embryo survives, the retrovirus can become a permanent part of the human genome, and be passed down from generation to generation. Scientists estimate that as much as 8 percent of the human genome may be comprised of extinct retroviruses left over from infections that occurred millions of years ago. Yet these sequences of fossilized retrovirus were thought to have no discernible functional value.

"The human genome is filled with retrovirus DNA thought to be no more than fossilized junk," said Luban. "Increasingly, there are indications that these sequences might not be junk. They might play a role in gene expression after all."


Interestingly, the HERV-H genes that were expressed in human pluripotent stem cells are only found in the human and chimpanzee genomes, indicating that HERV-H infected a relatively recent ancestor to humans, said Luban.

"Once upon a time HERV-H was an invader to our genome and perhaps caused diseases like AIDS or cancer," said Luban. "Now it seems that a kind of détente has been reached. Not only that, but this ancient invader may one day be exploited by clinicians to cure people of a wide range of diseases using stem cell therapies."

Luban and colleagues will next try to determine the specific mechanisms by which HERV-H contributes to pluripotency.

<<Snipped for brevity. More at link below>>

http://medicalxpress.com/news/2013-01-retrovi...
The Dude

Birkenhead, UK

#953 Jan 23, 2013
Kong_ wrote:
"The human genome is filled with retrovirus DNA thought to be no more than fossilized junk," said Luban. "Increasingly, there are indications that these sequences might not be junk. They might play a role in gene expression after all."
Very cool, but have to wonder why they say stuff like this when it's been known for years. Syncitin-1 in placental mammals for instance.

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Since: Jun 10

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#954 Jan 23, 2013
MikeF wrote:
<quoted text>
Amazing!
Yes, it was, very. His/her body language seemed to express trust and need, almost like a patient with a doctor or a super model with her attendant. It didn't pull away or flinch when confronted and touched with a sharp, alien object. I got the impression it was thinking, "Here's your sticky junk back, dude. Be more careful next time you dunk this stuff."

“Pissing people off since 1949”

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#955 Jan 25, 2013

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#956 Jan 27, 2013

“Pissing people off since 1949”

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#957 Jan 29, 2013
But perhaps related to abiogenesis:

http://blogs.discovermagazine.com/crux/2013/0...

And!

http://www.sciencerecorder.com/news/living-ba...

Seems life is everywhere.

“Pissing people off since 1949”

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Since: Apr 08

Seffner, FL

#958 Jan 31, 2013

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