Ripped From the Headlines of Science Digests!

Yes, Virginia, there is such a thing as a Venatrix.  (And the rest of you, get your minds out of the gutter!)

The newly analyzed drawing, on a third-century mosaic, shows a huntress fighting a leopard with a whip, i.e., a venatrix.

In the Roman Empire, beast hunters put on shows in arenas, where they would battle wild animals, such as boars and bears. Unlike gladiators, they fought beasts rather than people. Like the female gladiators, it seems female beast hunters would "always fight topless, with bare breasts, because [otherwise] spectators from the stands would have had problems to notice that they were actually women, and [to] arouse an erotic effect on those spectators, to excite them sexually, was one of the aims sought by their performance."   (LINK)  

BTW, Romans approved of gladiators and beast hunters because the games reinforced essential cultural values: "martial courage, stoicism in the face of death, and the superiority of Roman power."  And the people loved it because it was exciting, stimulating, exciting... and they got fed for free, thanks to aristocrats and rich folks who were always jostling for popularity.  

Bad news for the permanent space stations:

Turns out that sperm cells, egg and embryos all like gravity. "This human, mouse and pig study, published Thursday (March 26) in the journal Communications Biology, revealed that sperm became disoriented, mouse eggs had fewer successful fertilizations, and pig embryos experienced developmental delays, all due to microgravity.

The findings have big implications for building a lasting human presence off Earth. The long-term settlements planned for the moon and Mars depend not just on keeping astronauts alive but on whether people can eventually reproduce there."  (LINK)

And another shock in the world of biological reproduction:

So if you can't produce your own offspring, clone them!  EXCEPT:

"You can't clone yourself forever, 

You can't make yourself all the time.

At some point you mutate, 

Especially vertebrates,

You can't make yourself 59 times."  

Seriously, the limit is 58 successive clones.

Michael Lynch, an evolutionary biologist at Arizona State University in Tempe, who was not involved in the study: “In any kind of animal breeding, once you have the optimal genome, the best way to keep it is by cloning — except for this mutation problem.”  

Cats Can't Taste Sugar - this doesn't mean that your cats will never go after your chocolate, or knock it down onto the floor. It just means they can't taste it.  

The weird part (to me) of the study of taste in animals is that “The super-tasters among the animal world are goldfish,” says Finger. “Goldfish and catfish have way more taste buds than anybody else.” They have poor vision, and their taste buds, including those on their whiskers, could help them sense their way to a meal in murky water, he adds. (LINK)

Goldfish?  Goldfish?  So now I'm pitying all the goldfish swimming in their bowls, getting the same damn fish food day after freaking day... I'm amazed they don't leap out of their bowls and go for the hand that feeds them.

Little Mysteries From Science: WARNING:  Solutions have not yet been found for all.


Why are humans the only species with a chin? (LINK)


Why can't you tickle yourself? (LINK)


What's the deal with blushing?

Charles Darwin described blushing blushing as "... the most peculiar and most human of all expressions."

“Man is the only animal that blushes. Or needs to.” Mark Twain

"Blushing may be a part of the automatic arousal you feel when you are exposed and there is something that is relevant to the self," lead study author Milica Nikolic said. (LINK)

Why do animals have different pupil shapes? (LINK)

The Ig Nobels are moving to Europe! 😭😭😭

Winners have for the past 35 years traveled to the United States to collect their prizes — and be showered with paper airplanes. Last year, winners included a team of researchers from Japan studying whether painting cows with zebralike stripes would prevent flies from biting them. Another group from Africa and Europe pondered the types of pizza that lizards preferred to eat.

The year’s winners, honored in 10 categories, also include a group from Europe that found drinking alcohol sometimes improves a person’s ability to speak a foreign language (as well as Pure Gibberish) and a researcher who studied fingernail growth for decades.

But four of the 10 winners last year chose not to travel to Boston for the ceremony. In previous years, the ceremony has taken place at Harvard University, Massachusetts Institute of Technology and Boston University.

And so... off to Zurich it goes! (LINK)

Ig Nobels, we barely knew thee...

LIPS!

Back on March 9, I participated in my own scientific medical experiment regarding the swelling of lips, specifically my bottom lip.  Here's the deal: during an examination my ENT physician found a papilloma in the back of my throat.  Did a biopsy.  Squamous tissue, i.e., we've got to take it out because it might become cancerous if we don't.  So, on March 9 they did, having wisely given me total anesthesia (I have a kick like a mule), using a (portable) laser.  

Anyway, all went well, I came home that night feeling like a zombie, and the next morning I got up, looked at my face, and said, "What the hell...?"  Now in order to get the laser down where it needed to be, they had to hold my bottom lip down with something (I really don't want to know with what), and this was the result:  Basically, I got a not-so-free non-filler Mar-A-Lago filler job on my bottom lip.  

It lasted for about a week.  During this time I reached the strictly scientific conclusion that anyone who has this done on purpose is certifiably insane.  For one thing, it turned meal-times into an adventure, because the lip simply would not behave itself.  It was just there, and not happy about being used, because it hurt.  And since I wasn't 6 months old anymore, I no longer enjoyed the feeling of food spilling down my face.  Also, it completely blew up the trope that the hero (or in my case, heroine) can get in a fist fight (or a surgery) and then have deep  passionate kisses afterwards.  I certainly couldn't:  it hurt.  

I'm back to normal, and I am happy to announce all was benign.  And that I will never pursue the Mar-A-Lago look on a permanent basis.  I'd rather be a female gladiator any day.

Fingerprints: Not So Elementary

Can a character in a mystery and crime novel have no fingerprints or altered fingerprints? This would make for a fascinating plot twist.

Fingerprints are used to identify people because each one is unique. Formed during pregnancy, fingerprints remain the same throughout life.

Fingerprints are also usually a durable identifier. In one famous case, a gangster in the 1930s, John Dillinger, tried to destroy his fingerprints by burning his fingertips with fire and acid. In the end, his skin regrew and his fingerprints were still intact.

However, details on fingerprints can be temporally changed

Some jobs, such as bricklayers, dishwashers and those who work with chemicals such as calcium oxide, may lose some details in their fingerprints but the ridges grow back once these activities stop.

Some medical conditions can impact fingerprints temporarily. Skin diseases such as eczema or psoriasis may cause temporary changes to the fingerprints, but upon healing the fingerprints will return to their original pattern.

Other medical conditions can leave people with no fingerprints at all.

A genetic disorder, adermatoglyphia, causes a person to have no fingerprints. Scleroderma is a disease associated with changes in skin elasticity, hardness, and thickness and eventually make a patient with scleroderma a “fingerprintless person”.

Some people treated for breast or colon cancer with the chemotherapy drug capecitabine may have a side effect called “hand-foot syndrome,” which sometimes can lead to loss of fingerprints.

What about a criminal who wants to change their fingerprints? One interesting option is surgical, “using plastic surgery (changing the skin completely, causing change in pattern – portions of skin are removed from a finger and grafted back in different positions, like rotation or “Z” cuts, transplantations of an area from other parts of the body like other fingers, palms, toes, soles.”

There’s an interesting case proving this actually works. A woman used this surgical method, “skin from her thumbs and index fingers were reportedly removed and then grafted on to the ends of fingers on the opposite hand. As a result, Rong's identity was not detected when she re-entered Japan illegally.”

Maybe we are entering a whole new era where we now have the knowledge that fingerprints aren’t as reliable as they once were, can even be changed and we now could have new plots twists.