Archive for category biology

LIFE “OUT THERE” LOOKS LIKELY

Posted by on Wednesday, 9 November, 2011

 

 

STAR GOO

Remember how Doctor Spock and Captain Kirk, in the Enterprise, were always running into alien life forms? I don’t believe they ever explained, exactly, how the plug uglies they encountered happened to be up there (or maybe I missed that episode). Did they evolve from monkeys just as we did? Very homely ones? Were their planets colonized by refugees from Earth who, under the constant bombardment of gamma rays on Alpha Four, began to look like they had a case of bad stage makup?

Maybe there’s another explanation for how alien civilizations get their start. Two researchers at the University of Hong Kong say the “building blocks of life” are everywhere, waiting for the deft touch of nature (or, if you prefer,the finger of God) to turn them into living cells.

They (the researchers) say stars make a petroleum like substance which is full of complex organic molecules. Aromatic rings, even. This  ”Star Goo”, eventually, spreads throughout space.

The last time we watched life get started – um that would be the first time too – it happened in the wink of an eye. A cosmic eye, anyway. Since we know there are lots of planets and lots of water out there and, now,  thanks to Kwok and Yong Zhang , we know that every star in every galaxy contains  an E Z STARTER KIT FOR LIFE , it’s a good bet that there are plenty of living creatures to be found.

BUT NOT A SINGLE DROP TO DRINK

Doesn’t that just suck?  Living creatures inhabiting biological niches throughout this busy universe, and, yet, we continue our lonely existence with no practical way to know who or what is out there? Life everywhere but “not a single drop to drink”?

As it were.

For a while, the SETI Project seemed like it might come up with something but it’s beginning to dawn on some that we’re probably barking up the wrong antenna. Our own civilization sends out very few stray radio waves anymore.  More underground cables. Less antennas. If it’s like that, upstairs, this is bad news for SETI.

Sad, I suppose, although, maybe it’s good for us to figure things out on our own. And, maybe, we’re better off without yet another higher power. Heaven KNOWS we’re having enough problems with the lower ones.

Get this though. There may BE a way to sniff out another civilization. Wouldn’t aliens, independently, come up with the idea of artificial light? Just like we did? It makes sense.   Abraham Loeb and Edwin Turner think so. Loeb (Harvard) and Turner (Princeton) feel that a well lit alien city could be detected with a sensitive telescope. It would have to be  more sensitive than anything we have now but, with the right filters, a new generation of telescopes might do the trick.

At least, that’s the theory.

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Image by Mister SASB


SCIENTIST CLAIMS LIBERALS HAVE PECULIAR BRAINS

Posted by on Saturday, 30 July, 2011

Ain't THAT Bad!

ARE THERE REALLY DIFFERENCES IN THE BRAINS OF LIBERALS VS CONSERVATIVES?

You never know when you’ll actually need a brain. When you’re fly fishing, gray matter and white matter help. I dunno about politics. Is brain meat actually an advantage there? Some say yes. Some say no.

One thing’s for sure. Liberal brains and conservative brains? They’re not the same thing. Ryoto Kanai (Current Biology) says he bothered to look at the brains of conservatives and found nothing at all.

All right, all right. He found stuff. But what? He found great big amygdalas (the part of the brain that, supposedly, recognizes danger). When he looked at liberals, he found a bigger cingulate cortex (which  handles conflicting information). He says his research is the first neuroscientific evidence for biological difference between liberals and conservatives.

Let me help you distill this scientific work cause it’s so darn important. He’s saying conservatives are cavemen. Liberals are critical thinkers.

SCIENCE AIN’T

Here’s the thing. Its not like neurology’s a dead zone. Scientists really ARE figuring out what’s going on in our skulls. Great things are happening on that front. But you gotta keep a wary eye out cause “science” (those WERE quotes) can put lumps in YOUR brain if you  believe everything you read. Dr. Kanai’s study showed a gross difference – a size difference – between two parts of the brain whose functions are “thought” (quotes again) to play a role in threat awareness vs information sorting. The author, himself, says it’s very unlikely that these differences “directly encode” political differences. He says that more grants.. uh.. I mean.. more studies are needed.

ScienceAintSoBadRating = 3 Nothing wrong with looking at this stuff. Careful about yer conclusions though. Okay?

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Thanks to x-ray delta one and Flickr for the cartoon.

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IS SEX LOSING ITS SEX APPEAL?

Posted by on Saturday, 2 April, 2011

Image credits: Comics at xkcd.

ASEXUALS

Just about everything that makes us human comes in small, medium, large, and extra large doses so it shouldn’t surprise you if I tell you we’re not all the same in the sex drive department.

Some people are a little over and some are under, there too.

Lots of people don’t have sex, of course.

Few of the readers of this blog do.

But are there people with no sex DRIVE? None at all? I am NOT asking (not interested, actually) in whether you are straight or gay or transwhatever. I’m asking whether ANYTHING  gets you interested, sexually speaking.

Ever.

I did some research.

No not THAT kind of research. I looked for studies. Data, and such. And, well doggone! It’s true. Lots of people don’t GIVE A RAT’S BUTT ABOUT SEX AND  NEVER WILL!

Funny huh?

Anthony Bogaert (Brock University) started describing the phenomenon a few years ago.  Asexuals  constitute about 1% of the population. About 3,000,000 people in the United states. Naturally, they have an organization,the Asexual Visibility And Education Network, which is trying to increase awareness.

No reality show so far.

Media hyped groups do come in and out of fashion with regularity, of course. I guess we’re about finished Don’tAskDon’tTelling gay people, so we may have spare time for something new.  Would YOU be comfortable serving with them in the marines? Would asexuals  GET the  lusty humor? Would it be possible to behave honorably under fire without a sex drive?

Although asexuals aren’t attracted to either sex, many get married and dutifully try to satisfy their partners. No more complaints than you might expect, all things considered.

(Is this important science? You decide. I just keep the stories coming. )

More detail from Dan Childs (ABC News).


RADIATION: WHAT COULTER WAS TRYING TO SAY

Posted by on Monday, 21 March, 2011

I READ THIS ARTICLE, SEE..

ANN COULTER EFFECT

Conservative author Ann Coulter read an article ( Science Section of the New York Times) which, she says, shows how a certain  amount of nuclear radiation’s okay. Healthy, even.  She said most physicists are on board with this.

Which they’re not.

Coulter’s confusion (?)  isn’t hard to understand. Science is a slippery thing.

In an interview with Bill O’reilly, Ms Coulter says “It’s not me I’m citing, it’s a stunning number of physicists”. She said that there’s science going WAY back about how low doses of radiation may be a good thing.

What IS she talking about?

HORMESIS

This is the brainchild of  Dr. Abraham Lessismore (Montgomery Junior College) who tried to poison some  geese which were despoiling his dock. Couldn’t get rid of them. Tried everything. Finally decided it was time to stop foolin’ around.

Lessismore, a graduate student in 1998, couldn’t afford the recommended 10 bags  of  Gretchen’s Goose Killer so he only bought one . “I figured it might not kill ALL a those sonna bitches but even two or three would make me happy.”

Lessismore spread the Goose Killer stuff  and watched the geese peck at it while he crouched behind his fake coyote to enjoy the dying paroxysms of these horrible creatures.

When they had finished eating the Goose Killer, they stood around. Lessismore, thought the fat one looked bad.

It wobbled.

Then it turned turned toward him, locked eyes,  and pooped.

Large one.

It  fluffed its wings, and waddled away.

After some time, it occurred to Lessismore that the poison hadn’t harmed the geese at all. If anything, the flock appeared sturdier than before. They had  more energy. The one with the growth on its neck? Was he imagining it? Each day, the growth appeared smaller. Eventually, the growth disappeared and that goose turned up leading a group of new hatchlings.

Undaunted by his failure to roust the geese, Dr. L turned to the scientific implications of what he had just witnessed. Giving the geese a reduced dose of a toxin didn’t result in reduced casualties and, instead, seemed to have some kind of curative effect. This, it seemed to Lessismore, could be a new scientific principle. Thus was born the idea of “Hormesis”.

(If you don’t believe my goose story, here’s another version of the thing.)

Seriously?

Are things that are bad  in large doses, good  in small doses? Sure. That’s why medicines have labels. A truck full of aspirin would probably give you a REAL headache, wouldn’t it?

Researchers such as Edward Calabrese   believe toxins in low doses stimulate some kind of protective reaction without doing real damage. The problem? The evidence is weak and confusing which isn’t surprising. There’s always a “signal to noise” issue when you’re measuring something very small.

And some of the researchers may be a little  ”intense”. One wore a radioactive vest around for its health benefits . Enthusiasm amok.

Here’s the deal. There IS a lot of info about hormesis. If you google it, you get the impression that hormesis is the real deal.  In fact (and strangely) you don’t find much serious criticism. Not in the first 25 hits, anyway.  So I don’t blame Ann Coulter.

Not really.

Unfortunately, googling isn’t always the best way to settle a scientific question. Sometimes you just need someone you trust and, yes, I do hope MISTER ScienceAintSoBad’s on your list.

The  basis for hormesis is pretty sketchy. Even if it is, ultimately, confirmed, it will only apply to some stuff.

What about radiation?

Let me put it this way, most physicist do NOT walk around wearing radioactive vests.

Trust me on that.


VEGANS IN TROUBLE?

Posted by on Friday, 18 February, 2011

TYPICAL VEGAN


VEGANS AND HEART PROBLEMS
DIETARY CHANGES SUGGESTED

Dear Mister ScienceAintsoBad,
Was Dr. Spock a Vegan? – GetItAllWrong

A Vegan? From the planet Vega?

Good GRIEF, GetItAllWrong. Spock was a Vulcan, not a Vegan. Very serious. Pure logic. Big ears. Mind-melds. Telepathy. His planet was nipped by a black hole before its  population had a chance to switch to a more enlightened diet.

Vegans currently live on OUR planet. Earth. Not the planet Vega. Most Vegans are very serious and logical. They have big ears and they’re kinda empathetic, if not telepathic. The difference, my dear GetItallWrong, is meat.

Not having any of it.

At all.

No milk, no pig’s knuckles. No seafood. No poultry. No eggs. No dairy products.

Pretty extreme, you may say. But, you know what? Healthy as pineapples. (Was gonna say “pigs” but some vegans do read this blog, after all.)

Here’s the thing.

An article in the Journal of Agricultural and Food Chemistry (Duo Li), reviews lots and lots of studies about Vegans here on earth over about 30 years.

The conclusion?

They can do better.

Cutting out the animal products is a very, very good thing. However, Vegans tend to be a little light on iron, zinc, B-12 and Omega 3 fatty acids.

Not good, since that can lead to atherosclerosis, heart problems, and stroke. But tweaking things a bit with fish oils and nuts should do the trick here.

This is a worthwhile report.

Scientifically sound.

But this is a “may increase the risk” thing. I don’t see any “Vegans Keeling Over In Large Numbers” data.

Could be next.

Take yer supplements.

OK?

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