Las Cascadas de Sangre en la Antárida

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Un grupo de investigadores estadounidenses logró resolver un misterio que había mantenido intrigada a la comunidad científica por 112 años, al descubrir que el color rojo del agua que se filtra de un glaciar en la Antártida es provocado por unas nanoesferas ricas en hierro, informó este lunes la Universidad Johns Hopkins.

En 1911, el geólogo británico Thomas Griffith Taylor observó, durante la expedición antártica ‘Terra Nova’, que en la base rocosa de un glaciar que actualmente lleva su nombre brotaba un líquido que parecía sangre, tornando el agua clara en un tono rojizo.

Este fenómeno, que fue nombrado por Taylor como ‘Cascadas de Sangre’, permaneció como un enigma por más de un siglo, hasta que Ken Livi, científico de la Universidad Johns Hopkins, examinó los sólidos que había en las muestras de agua, encontrando los causantes.

De acuerdo con los responsables del hallazgo, recientemente reportado en Frontiers in Astronomy and Space Sciences, la microscopía electrónica de transmisión determinó que había una gran cantidad de diminutas partículas esféricas de hierro que al oxidarse ocasionan que el agua cambie a su sangriento color.

Livi recalcó que estas nanoesferas, que son una 100 veces más pequeñas que un glóbulo rojo humano, no habían sido identificadas en anteriores investigaciones porque se creían que era algún tipo de mineral. Sin embargo, explicó que, al no tener una estructura cristalina, estas pequeñas partículas no pueden ser consideradas como minerales, por lo que los métodos empleados en el pasado  para “examinar sólidos no las detectaron”. Esto se debe a que sus átomos tienen que estar organizados de manera específica a lo largo de un cristal.

Por otro lado, Livi explicó que las antiguas aguas que están debajo del glaciar, ricas en hierro y sal, conservan cepas bacterianas que no han cambiado en millones de años. El experto subrayó que la compresión de este entorno inhóspito también podría revelar información relacionada con la existencia de vida en otros planetas.

“Con el advenimiento de las misiones Mars Rover, hubo un interés en tratar de analizar los sólidos que salían de las aguas de las Cascadas de Sangre como si fuera un lugar de aterrizaje marciano”, apuntó Livi.

No obstante, aseguró que el estudio realizado por los vehículos de exploración de la superficie ha sido “incompleto para determinar la verdadera naturaleza de los materiales ambientales en las superficies de los planetas”, ya que han sido diseñados para detectar materiales en su forma cristalina. “Para comprender verdaderamente la naturaleza de las superficies de los planetas rocosos, sería necesario un microscopio electrónico de transmisión, pero actualmente no es factible colocar uno en Marte”, concluyó.

 


PrisioneroEnArgentina.com

Julio 4, 2023


 

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mandy123
mandy123
3 years ago

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RRghost
3 years ago

Personally, I think it is unfair, due to the higher or lower levels of testosterone. A possibility for equality in sports is to categorize based on testosterone levels or any hormone that is shown to spike an advantage on the specific sport. If they all have a similar testosterone level, would the sex and gender matter?

Brad Netti
Brad Netti
3 years ago

if I were a female athlete I would most definitely feel somewhat cheated if someone who used to be a male wanted to compete against me.

Lulu Fields
Lulu Fields
3 years ago

Until we can say for sure that there is no significant advantage maybe we should just have seperate categories for trans men and women

tippy johanssen
3 years ago
Reply to  Lulu Fields

Except, there aren’t really enough of us to make that work or be worth it. Trans people trying to “usurp” elite competitive sports is not the epidemic the media wants you to think.
Plus trans people just want to live fully as their identified gender. A trans man wants to live the same way a cis man would, and vice versa.

B.J. Seegar
B.J. Seegar
3 years ago

thats transphobic

鱼粮寮
3 years ago

这不公平。 这是我的意见

发明_一
3 years ago
Reply to  鱼粮寮

允许跨性别者与异性竞争只会在一个方向上给他们带来可能的优势! 跨性别女性可能比顺女性更有优势。 然而,跨性别男人与顺式男人相比肯定没有优势。 因此,顺式男性没有真正的变化,而女性可能会有很大的变化。

ashley-cooper-brown
3 years ago

It’s not complicated. It is unfair. And no, it’s not transphobic.

Katrin Helgadóttir.
3 years ago

„Það er algjörlega brýnt að frelsi og mannréttindi hverrar manneskju séu virt, um allan heim.“
– Jóhanna Sigurðardóttir

Will on the streets
3 years ago

transgender athletic research is among the most important research areas of the next 20 years. I think that data permitting, we should eventually have sport-specific rules for transgender athletes

breaker.malone
3 years ago

The strength definitely is the difference

Pamela Anne James
3 years ago

I think it’s unfair to the girls who work really hard to do well

Captain Facade
Captain Facade
3 years ago

transgender athletes are people just like us: normal human beings with feelings, passions, and dreams. They have every right to do what a normal person does and be treated justly. If a trans boy or girl is good at sports, then they deserve a chance to prove their self to the world. A transgender athlete might be worthy of a college sports scholarship or play professionally later on in their lives, but it can all be jeopardized by one erroneous decision taken by the board of directors. Wrong placement of a transgender (in gender teams) can endanger their performance; therefore, the deciders must assign teams justly by examining the Testosterone level.

LADy Blazette
LADy Blazette
3 years ago

Trying to cater to everyone’s feelings isn’t the magical utopia people think it is.

chat and yell
3 years ago

This isnt a point anyone can argue. They do have an advantage. Even if having not gone through puberty, they still have a male bone structure.

noondayfilms
3 years ago

I support trans rights but the advantage is clear and it’s delusional to think otherwise.

Danzart
3 years ago

Making all sports gender neutral will mean that a woman will never won Wimbledon, never win a heavy weight title , never qualify for final 100m sprint . It would be devastating

Renata
Renata
3 years ago
Reply to  Danzart

Rendere gli sport neutrali rispetto al genere renderebbe le donne cis essenzialmente incapaci di praticare qualsiasi sport fisico a qualsiasi livello competitivo

Luana Pickard
Luana Pickard
3 years ago

I actually agree that trans people (especially male to female) do have a physical advantage over cis women

Ranch Girl
3 years ago

Alternative title for the article: people trying not to say something that would get them cancelled for 20 minutes straight.

Shay Caprice
3 years ago

The problem is not F2M trans athletes. It is M2F trans athletes.
Hormones and surgery can only go so far. Male and female bodies are different (especially after puberty) & hormones/surgery can’t change it.

Mar Schopplenhenger
3 years ago
Reply to  Shay Caprice

Yup. They face a huge disadvantage

Alan Omelka
3 years ago

mos def: NOT FAIR TO WOMEN

The Masked Mask
3 years ago

I feel so sorry for the cis athletes. I feel they had to hold back heavily on their words, or else they’d be canceled.

amanda rae
3 years ago

My male partner and I, a female, started going to gym at the same time. We did the same workouts for the same amount of time and ate all the same things (we live together). Starting from both of us not going to the gym for over a year and both being naturally thin people with a three-inch height difference and a weight difference of 10lbs, he quickly surpassed my lifting abilities. Males are just naturally stronger 9/10 times when put up against a female of the same/similar height and weight. It’s not transphobic, it’s just the way our bodies differ

Genius in Montana
Genius in Montana
3 years ago

The cis athletes were trying to be as reasonable as possible by giving arguments that generally applies to all athletes while the transgender athletes were just being anecdotal most of the time

Scent of a ...
3 years ago

Say it with me: not agreeing with the trans people participating against females in sports doesn’t mean you’re transphobic (unless it’s something actually transphobic)

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