liveonearth: (moon)
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.
liveonearth: (blue skinned alien)

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

liveonearth: (kitteh snake)
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
liveonearth: (microbes)
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. )
liveonearth: (microbes)
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.
liveonearth: (microbes)
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 Life )
liveonearth: (gorilla thoughtful)
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
liveonearth: (part of the solution)
ENERGY LITERACY
CONSERVATION
RESILIENCE
RELOCALIZATION
FAMILY PLANNING
BEAUTY
BIODIVERSITY
the Post Carbon Institute, that is )
liveonearth: (moon)

What skeptical thinking boils down to is the means to construct, and to understand, a reasoned argument and, especially important, to recognize a fallacious or fraudulent argument. The question is not whether we like the conclusion that emerges out of a train of reasoning, but whether the conclusion that emerges out of a train follows from the premise of starting point and whether that premise is true.
--Carl Sagan in his Baloney Detection Kit
if you want more )
liveonearth: (Default)
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NO. Because we are animals. Our instinct is to be wary of creatures that are much different. Unfamiliar races are too strange to our animal selves for us to ever completely override that instinct with intellect. It would take either a LOT of evolution as a global community, or substantial racial blending and homogenization, or both, to reduce this response. It appears to me that before either of these mechanisms is complete way we will have a substantial reduction in human populations and return to a more tribal way of living which will separate us and reduce the blending of races, thus slowing or reversing the process.
liveonearth: (Default)
A recent amber discovery in India contains over 700 kinds of arthropods including bees, ants, termites, crustaceans and spiders. Apparently the amber was from a Gujarat province open pit mining operation, and contains at least 100 previously unknown species of insects. The history recorded in this batch of amber is from approximately 53 million years ago---just before India, which had broken off from the subcontinent called Gondwana, collided with Asia. That collision was supposed to have happened about 50 million years ago, and formed the Tibetan plateau. About 150 million years ago, the Indian tectonic plate separated from the African plate and began its 100 million year journey to Asia. During that long journey the subcontinent was isolated from all other continents, giving its wildlife the chance to evolve in distinctly different ways (much like the evolution of marsupials in Australia). So this data is a sample suspended in geological time, before the species on one floating block of land merged with the established biome of Asia. As such it is much more important that just being a bunch of bugs in pretty yellow stone. It helps us further map the biological history of many species.
links, sources )
liveonearth: (Default)
[livejournal.com profile] sad_sick_truth has turned 61 and written an essay on the trajectories and likely fate of humanity.
liveonearth: (Default)

...we humans are just another primate species: a terribly neurotic, screwed-up, overly self-conscious one with some fancy thumbs, but still just another primate.
--Robert M Sapolsky in The Trouble with Testosterone and other Essays on the Biology of the Human, p14
liveonearth: (Default)
It turns out that gays are different from heteros in a number of minor ways....finger length, hair whorl direction, handedness....not that it all adds up to anything decisive, but it is interesting all the stuff that people are studying in relation to gayness. I wish there were some broad endocrinological studies, of the mothers during pregnancy, of the developing children, and of the sexually identified adults. I think hormones are the main reason why some people are gay, though of course there can be many factors.

Here's an interesting article, by a gay man, about the difference:
http://nymag.com/news/features/33520/

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