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Entries by tag: biology

QotD: Flow as Primitive

“The state of flow, like the path that bears its name, is volatile, unpredictable, and all-consuming. Flow feels like the meaning of life for good reason. The neurochemicals that underpin the state are among the most addictive drugs on earth. Equally powerful is the psychological draw. Scientists who study human motivation have lately learned that after basic survival needs have been met, the combination of autonomy (the desire to direct your own life), mastery (the desire to learn, explore, and be creative), and purpose (the desire to matter, to contribute to the world) are our most powerful intrinsic drivers—the three things that motivate us most. All three are deeply woven through the fabric of flow. Thus toying with flow involves tinkering with primal biology: addictive neurochemistry, potent psychology, and hardwired evolutionary behaviors. Seriously, what could go wrong?”

—Steven Kotler in The Rise of Superman; Decoding the Science of Ultimate Human Performance, p158, in Ch10 entitled The Dark Side of Flow.

The First Wave Extinction, which accompanied the spread of the foragers, was followed by the Second Wave Extinction, which accompanied the spread of the farmers, and gives us an important perspetive on the Third Wave Extinction, which industrial activity is causing today.  Don't believe tree-huggers who claim that our ancestors lived in harmony with nature.  Long before the Industrial Revolution, Homo sapiens held the record among all organisms for driving th emost plant and animmal species to their extinctions.  We have the dubious distinction of being the deadliest species in the annals of biology.
--Yuval Noah Harari in Sapiens: A Brief History of Humankind, 2015, p74.

His work has been far from satisfactory... he will not listen, but will insist on doing his work in his own way... I believe he has ideas about becoming a Scientist; on his present showing this is quite ridiculous, if he can't learn simple Biological facts he would have no chance of doing the work of a Specialist, and it would be a sheer waste of time on his part, and of those who have to teach him.

--a college professor, on the report card of Sir John B. Gurdon, who won the 2012 Nobel Prize in Physiology or Medicine for his revolutionary research on stem cells

A new species of snake has been discovered: Siphlophis ayaums. Lots of other recent reptilians to join the taxonomy are featured in this post:
http://snakesarelong.blogspot.ca/2014/11/the-9999th-reptile.html

Also fascinating: why snakes (and lizards!) have 2 penises:
http://snakesarelong.blogspot.ca/2014/11/the-9999th-reptile.html

Why Dirt Helps Wounds Heal

In the field, some practitioners will pack an open wound with black soil to help it heal. You can get black peat that is used for this purpose and others. It is not pasteurized or sterilized in any way; it is full of living organisms. After the battle of Shiloh in the US civil war, soldiers whose wounds glowed in the dark had better survival. The organism (Photorhabdus luminescens) that was growing in their wounds came from the guts of nematodes living in the soil. Presumably this organism outcompeted the pathogenic ones. This kind of antibiotic mechanism cannot be ignored when antibiotic drugs are increasing ineffective.

More about the biology, and the source, behind cut.Collapse )

The Oceanic Plastisphere

Only one type of plastic does not float *in salt water at least*, and that is type I PETE plastic, the hard clear kind that drink bottles are made of. It is the most abundantly manufactured kind, and it does not float.

Types of Plastic:
1 PET
2 HDFE
3 PVC (rafts)
4 CDPE (bags)
5 PP
6 PS (polystyrene)
7 Other

I posted once about the Great Pacific Waste Dump, basically just parroting media hype. It turns out the plastic in the ocean is mostly in tiny bits instead of in a big island of capped bottles. It is thickest in the five GYRES on the planet, which appear to me to be doldrums where there are no tradewinds or strong currents. The most directly alarming thing about the litter of plastic bits is that it is covered in life that is migrating in a whole new way. Barnacles, biofilm and plankton all hitch a ride or get tangled in the mess. We had NO IDEA what this is going to mean in the long run. A new name has been coined for all the microorganisms on the polypropylene and polyethlene in the ocean: the Plastisphere. The only organism named by Emelia DeForce PhD in last night's Science Pub talk was Vibrio, the same genus as cholera. I was dying to ask if MRSA was on the plastic around Hawaii but we left because the line was long and we were done. All the factoids in this post are courtesy of Dr DeForce.

Plastic is made from crude oil into nerdles (sp?), which are small balls of hard petroleum product. Those can then be shipped to the manufacturers who combine them with additives and make their product.
Or in other words, they are a natural part of our immune defense! New science suggests that mucus in our body is full of viruses that attack bacteria! Those viruses don't hurt us, in fact, they protect us. Commensal viruses....
the article from LifeCollapse )

QotD: Change

It is not the strongest of the species that survives,
nor the most intelligent,
but the one that is most responsive to change.

-—Charles Darwin

What PCI Stands For

ENERGY LITERACY
CONSERVATION
RESILIENCE
RELOCALIZATION
FAMILY PLANNING
BEAUTY
BIODIVERSITY
the Post Carbon Institute, that isCollapse )

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