Quotulatiousness

October 8, 2018

The tyranny of testosterone, or why we shouldn’t lie to our kids

Filed under: Health, Media, Science — Tags: , , , , , — Nicholas @ 05:00

Sarah Hoyt, in the latest Libertarian Enterprise tries to talk to young women about the biological reality and how to avoid being fooled by Hollywood fantasy:

Myself and accomplice, neither of us fainting maidens, first went to the cabinet store, and found that cabinets we could barely move with much effort between the two of us were hefted around effortlessly by teenage employee who probably weighed all of 90 lbs and therefore less than either of us, and had arms like boiled spaghetti, but who had the blessings of testosterone making him much stronger than either of us.

I first ran into this with younger son, who at fourteen looked like a twig which I could have broken over my knee (he’d just grown two feet over the previous year, going from a foot shorter than I to a foot taller. This was also the year in which I was unreasonable and would turn around when he came in the room and say “shower, now” even though he’d already showered twice that day. I.e. to quote our old neighbor “that poor boy is being beaten with a stick made of testosterone. Mothers of boys will get it. At least mothers of boys who went through growth spurt from hell.) We went to the store to get cement to repair a crack in a garden path. The bags were 100 lbs. I tried to lift it and (partly because it was at foot-level and was an awkward floppy bulk) just couldn’t budge it.

Younger son gave the theatrical teenage sigh, reached past me, grabbed the bag and threw it into our shopping cart, leaving me open-mouthed in surprise.

So every time 90 lb girl beats a 300 lb trained fighter on TV remember that. And for the love of heaven explain to your daughters that it’s play fantasy. The daughter of old friends of ours has fallen for this hook line and sinker and was telling older son she could beat him. Older son actually has muscles (he was the one who helped me renovate two Victorians from the ground up and build two balconies. He also does all the sawing by hand.) He’s six one but projects taller. He also happens to be built like a brick ****house, as the men on my side of the family are. (As a little girl I keep insisting my cousins were wardrobes. If you think of the old fashioned wardrobe, seven feet tall and six feet wide, that’s the impression they projected.) That poor girl is five five and skinny for her height. She couldn’t even push older son back if he decided to stand still. She MIGHT be able to fend him off long enough to run away, if she fought like a cornered cat and gouged eyes and bit (I’ve done something like that in similar circumstances, but there’s a reason I’m never without a weapon.) but that’s about it.

Watching her brag to my least excitable, very patient son who just sighed and didn’t even bother contradicting her, I thought how lucky she was in her choice of male to annoy. But if she keeps it up, sooner or later her luck will run out.

We shouldn’t lie to the young, and all our fiction and most of our movies lie about what women can and can’t do, all in the name of “there is no difference between men and women.” (“Except men are defective women” is implied.)

September 5, 2018

Mind Your Business Ep. 1: Breaking the Mold

Filed under: Business, Environment, Food, Health — Tags: , , — Nicholas @ 04:00

Foundation for Economic Education
Published on 4 Sep 2018

Join host Andrew Heaton as we profile the stories of interesting entrepreneurs from around the country for FEE’s newest series, Mind Your Business.

In this episode, we’ll meet Jeremy Umansky. He’s a chef with a true passion for unusual food and his unique brand of cuisine is making a big splash in the culinary world.

May 9, 2018

What Makes Spicy Foods Spicy | Earth Lab

Filed under: Food, Science — Tags: , — Nicholas @ 02:00

BBC Earth Lab
Published on 24 Aug 2017

Greg Foot explains why some food is spicy!

April 16, 2018

Mass extinction or mass genesis? “The net result is that many more species are arriving than are dying out”

Filed under: Books, Environment, Science — Tags: , , , — Nicholas @ 03:00

We often hear laments for the addition of another species to the endangered list, but that’s not the whole story as evolutionary biologist Chris Thomas explains:

Animals and plants are seemingly disappearing faster than at any time since the dinosaurs died out, 66m years ago. The death knell tolls for life on Earth. Rhinos will soon be gone unless we defend them, Mexico’s final few Vaquita porpoises are drowning in fishing nets, and in America, Franklin trees survive only in parks and gardens.

Yet the survivors are taking advantage of new opportunities created by humans. Many are spreading into new parts of the world, adapting to new conditions, and even evolving into new species. In some respects, diversity is actually increasing in the human epoch, the Anthropocene. It is these biological gains that I contemplate in a new book, Inheritors of the Earth: How Nature is Thriving in an Age of Extinction, in which I argue that it is no longer credible for us to take a loss-only view of the world’s biodiversity.

The beneficiaries surround us all. Glancing out of my study window, I see poppies and camomile plants sprouting in the margins of the adjacent barley field. These plants are southern European “weeds” taking advantage of a new human-created habitat. When I visit London, I see pigeons nesting on human-built cliffs (their ancestors nested on sea cliffs) and I listen out for the cries of skyscraper-dwelling peregrine falcons which hunt them.

Climate change has brought tree bumblebees from continental Europe to my Yorkshire garden in recent years. They are joined by an influx of world travellers, moved by humans as ornamental garden plants, pets, crops, and livestock, or simply by accident, before they escaped into the wild. Neither the hares nor the rabbits in my field are “native” to Britain.

February 25, 2018

Masculinity and homicidal violence (aka “Not all men…”)

Filed under: Health, Science — Tags: , , , — Nicholas @ 03:00

In Quillette, William Buckner looks at the violence inherent in the (biological) system. “Help, help, we’re being repressed!”

Understanding patterns of lethal violence among humans requires understanding some important sex differences between males and females. Globally, men are 95 percent of homicide offenders and 79 percent of victims. Sex differences in lethal violence tend to be remarkably consistent, on every continent, across every type of society, from hunter-gatherers to large-scale nation states. In their 2013 study on lethal violence among hunter-gatherers, Douglas Fry and Patrik Söderberg’s data showed that males committed about 96 percent of homicides and were victims 84 percent of the time. In her study on violence in non-state societies, criminologist Amy Nivette shows that, across a number of small-scale pastoralist and agriculturalist societies, males make up 91-98 percent of killers. To illustrate the consistency of this relationship even further: we see the same pattern among chimpanzees, where males make up 92 percent of killers and 73 percent of victims.

To be sure, there is some cross-cultural variation. While I can find no well-studied population where women are known to commit more lethal violence than men, there are some societies where women make up an equal number, or even the majority, of homicide victims. These societies generally seem to have low rates of homicide overall, as the United Nations Office on Drugs and Crime mentions in their 2013 study on global homicide:

    Available data suggest that in countries with very low (and decreasing) homicide rates (less than 1 per 100,000 population), female victims constitute an increasing share of total victims and, in some of those countries, the share of male and female victims appears to be reaching parity.

Hong Kong, with a low homicide rate overall, has a comparatively smaller sex difference in homicide offending, and women make up a majority of homicide victims at 52 percent. Yet even in Hong Kong, males commit 78 percent of reported homicides. The world over, the majority of homicide offenders and victims tend to be reproductive-age males, between their late teens and early 40s.

To understand why this pattern is so consistent across a wide variety of culturally and geographically diverse societies, we need to start by looking at sex differences in reproductive biology.

[…]

Predictably, among humans, males engage in more direct, violent competition for mates than females do, and females provide more caregiving than males do. However, humans are unique in that some male participation in caregiving is ubiquitous across cultures. Human infants are particularly helpless during early development, requiring extensive provisioning and caregiving. Human males face the same tradeoff between securing mating opportunities and providing parental care that males of other species face, and the extent to which males utilize either of these strategies can vary significantly due to social and ecological factors.

Noting these sex differences in reproductive biology and parental investment is important because they help explain why males tend to engage in more violence than females. Aggressively engaging in violent conflict is more likely to reduce a female’s fitness, as it may bring unnecessary danger to her offspring, or cause an injury that may prevent her from reproducing in the future. For a male, however, violent conflict can potentially increase his reproductive success through increases in status, or by aggressively monopolizing access to key resources. Among the Yanomami of the Amazon, and the Nyangatom of East Africa, for example, males who participate in more violence and warfare have increased reproductive success. Even in the contemporary United States, there is evidence that more violent males have more sexual partners.

January 8, 2018

Forests in the olden days

Filed under: Britain, Environment, History — Tags: , , — Nicholas @ 04:00

Lindybeige
Published on 20 Apr 2016

Forests and woodland in the ancient and medieval worlds didn’t look the way they show in the movies.
Support me on Patreon: https://www.patreon.com/Lindybeige

More archaeology videos here: https://www.youtube.com/playlist?list…

I visited a local wildlife sanctuary based in a wood. In order to attract birds, they left the woods unmanaged, so that the undergrowth and rotting falling trees afforded good habitat for insects and ground-nesting birds. I talk about a few things, including climax vegetation, the burning of woods by hunter-gatherers, the medieval practices of coppicing and pollarding, and the way a modern managed woodland (the sort that you almost always see in the movies) looks neither like a heavily-managed medieval wood nor a wilderness unmanaged wood.

Lindybeige: a channel of archaeology, ancient and medieval warfare, rants, swing dance, travelogues, evolution, and whatever else occurs to me to make.

June 23, 2017

QotD: Philosophy

Filed under: History, Quotations — Tags: , , , — Nicholas @ 01:00

I believe the most important moment in the foreseeable future of philosophy will come when we realize that mad old Nazi bastard Heidegger had it right when he said that we are thrown into the world and must cope, and that theory-building consists of rearranging our toolkit for coping. I believe the biggest blind spot in analytical philosophy is its refusal to grapple with Heidegger’s one big insight, but that evolutionary biology coupled with Peirce offers us a way to stop being blind. I believe that when the insights of what is now called “evolutionary psychology” are truly absorbed by philosophers, many of the supposedly intractable problems of philosophy will vanish.

Eric S. Raymond, “What Do You Believe That You Cannot Prove?”, Armed and Dangerous, 2005-01-06.

June 2, 2017

How does deodorant work? I James May Q&A I Head Squeeze

Filed under: Health, Science — Tags: , , — Nicholas @ 02:00

Published on 11 Oct 2013

Get a whiff of this! James May delves in to the mechanics of deodorant.

Did you know that our sweat doesn’t smell? Made up of various things like our diet and genetics, it actually does not pong. Rather it’s when your sweat mixes with the bacteria on your skin that it releases an odor that can sometimes clear a room. Your armpits and pubic areas contain thousands of hairs which then hold on to your sweat and bacteria.

Us humans aren’t alone in smelling, many animals have some serious BO too. It’s not such a bad thing for them, it helps them mark out territory, repelling enemies and, most importantly, attracting mates.

Deodorants work by killing the bacteria on your skin and they also work as an anti-perspirant by reducing the amount of sweat. No more BO!

February 24, 2017

QotD: Western culture is in decline

Filed under: Liberty, Media, Quotations, USA — Tags: , , , , , , — Nicholas @ 01:00

Paglia: At first, I was very excited about the ethnic identity movement, because I feel very Italian-American and have always been in revolt against the WASP style that dominated academe — Leslie Fiedler himself was a victim of this, Harold Bloom was — there weren’t any Jews hired in the Yale English department in the mid-1950s, there were quotas on Jewish students admitted to Harvard, all things like that. But over time, what’s happened, I think, is that gender identity has become really almost fascist. It’s to me a very shrunk and miniaturized way of perceiving your position in the world and in the universe.

There [comes] a time when these fine gradations of gender identity — I’m a male trans doing this, etc. — this is a symbol of decadence, I’m sorry. Sexual Personae talks about this: That was in fact the inspiration for it, was that my overview of history and my noticing that in late phases, you all of a sudden get a proliferation of homosexuality, of sadomasochism, or gendered games, impersonations and masks, and so on. I think we’re in a really kind of late phase of culture.

reason: So that the proliferation of cultural identities, the proliferation of all sorts of possibilities is actually a sign that we’re…

Paglia: On the verge of collapse? Yes! Western culture is in decline. There’s absolutely no doubt about it, in my view, looking at the history of Egypt, of Babylon, of Byzantium, and so on. And so what’s happening is everyone’s so busy-busy-busy with themselves, with this narcissistic sense of who they are in terms of sexual orientation or gender, and this intense gender consciousness, woman consciousness at the same time, and meanwhile…

reason: Is that also racial or ethnic consciousness as well?

Paglia: Right now, to me, the real obsessions have to do with gender orientation. Although I think there’s been this flare-up [regarding race]. I voted for Obama, but I’ve been disappointed. I think we had hoped that he would inaugurate a period of racial harmony, and I think the situation has actually become even worse over recent years. It seems to be overt inflammatory actions by the administration to pit the races against each other, so I think there’s a lot of damage that needs to be healed.

But I think most of the problems as I perceive them in my students and so on, is that there’s this new obsession with where you are on this wide gender spectrum. That view of gender seems to me to be unrealistic because it’s so divorced from any biological referent. I do believe in biology, and I say in the first paragraph of Sexual Personae that sexuality is an intricate intersection of nature and culture. But what’s happened now is that the way the universities are teaching, it’s nothing but culture, and nothing’s from biology. It’s madness! It’s a form of madness, because women who want to marry and have children are going to have to encounter their own hormonal realities at a certain point.

Camille Paglia, “Everything’s Awesome and Camille Paglia Is Unhappy!”, Reason, 2015-05-30.

June 14, 2016

QotD: Romantic love … what is it for?

Filed under: Health, Quotations, Science — Tags: , , — Nicholas @ 01:00

It’s all about the encephalization, really. Millions of years ago our hominid ancestors stumbled onto a novel adaptive strategy: be smart, adaptable, and capable of learning rather than purely instinct-driven. Make tools; use fire; invent language.

This strategy required much, much more of our nervous systems. Because intelligence was in fact a winning strategy, we were selected for growing more complex brains capable of doing more information processing. But increasing the logic density of brains is hard; there probably isn’t a path to it through the design space that is rapidly exploitable by small point mutations. So selective pressure made our brains larger, instead.

The fossil record shows that the hominid line encephalized at a breakneck speed compared to the usual leisurely pace of evolutionary change. This had huge consequences; much of human biology is a series of hacks and kluges to support that encephalization, often in stupidly suboptimal ways.

The one that’s relevant here starts from the limited width of the birth canal. Limited, that is, by the pelvic girdle surrounding it. A skull that’s too large won’t fit through. Therefore, the genetic lines that survived were those in which babies are born with small skulls but the ability to grow them much larger by maturity. (And even so, the size of a baby’s skull pushes that limit pretty hard; this is why birth is so much more difficult and dangerous for human females than it is for other primates).

That design (be born with a small skull and upgrade it outside the womb) implied a long juvenile period between birth and physical maturity. In fact the human brain doesn’t completely finish configuring and rewiring itself until around age 25. And the long juvenile period probably also explains the exceptionally long human lifespan; whatever had to be altered in the development clock to defer stabilization into the final adult configuration probably also delayed the inset of senescence. (Direct evidence for this theory is the rare disease “progeria”).

And the dominoes kept falling. The long juvenile period implied offspring that would be incapable of fending for themselves for an unprecedently long time – on the order of decades rather than the few months to a year typical for other mammals. Consequently the selective value of extended cooperation between the parents went way, way up relative to even our nearest animal kin.

Romantic love works as an an evolved mechanism for keeping mated pairs cooperating long enough to raise multiple children. Here again, selection favors those who love more because they get to launch more offspring. We are, in fact, made to fall in love – and it would only be surprising if the mechanism for establishing it were not simple, robust, and easily triggered.

Eric S. Raymond, “Love is the simplest thing”, Armed and Dangerous, 2015-01-15.

October 16, 2015

QotD: This explains so much

Filed under: Health, Humour, Quotations, Science — Tags: , — Nicholas @ 01:00

The entire brain weighs three pounds (1.4 kg) and so is only a small percentage of an adult’s total body weight, typically 2%. But it consumes 20% of all the energy the body uses. Why? The perhaps oversimplified answer is that time is energy.

Neural communication is very rapid — it has to be — reaching speeds of over 300 miles per hour and with neurons communicating with one another hundreds of times per second. The voltage output of a single resting neuron is 70 millivolts, about the same as the line output of an iPod. If you could hook up a neuron to a pair of earbuds, you could actually hear its rhythmic output as a series of clicks.

[…]

Neurochemicals that control communication between neurons are manufactured in the brain itself. These include some relatively well-known ones such as serotonin, dopamine, oxytocin, and epinephrine, as well as acetylcholine, GABA, glutamate, and endocannabinoids. Chemicals are released in very specific locations and they act on specific synapses to change the flow of information in the brain. Manufacturing these chemicals, and dispersing them to regulate and modulate brain activity, requires energy — neurons are living cells with a metabolism, and they get that energy from glucose. No other tissue in the body relies solely on glucose for energy except the testes. (This is why men occasionally experience a battle for resources between their brains and their glands.)

Daniel J. Levitin, The Organized Mind, 2014.

October 8, 2015

Science as horse racing

Filed under: Science — Tags: , , , , — Nicholas @ 04:00

In Wired, Sarah Zhang handicaps the horses in this year’s highly competitive Nobel Sweepstakes:

Nobel prize speculation, gossip, and betting pools kick off every fall around the time Thomson Reuters releases its predictions for science’s most prestigious prize. This year, one prediction was unusual: a genome-editing tool so hyped that it even got on the cover of WIRED.

(No, seriously, how often does molecular biology get to occupy the same space as Star Wars or Rashida Jones?)

The tool, Crispr/Cas9, is essentially a pair of molecular scissors for editing DNA, so precise and easy to use that it has taken biology by storm. Hundreds if not thousands of labs now use Crispr/Cas9 to do everything from making super-muscled pigs to snipping HIV genes out of infected cells to creating transgenic monkeys for neuroscience research. But the Nobel prediction stands out for two reasons: First, the highly-cited paper describing Crispr/Cas9 came out a mere three years ago, a blip in the timescale of science. Second, the technique is currently at the heart of a bitter patent fight.

Thomson Reuters bases its predictions on how often key papers get cited by other scientists. Here, the paper in question has as its authors Jennifer Doudna, a molecular biologist at UC Berkeley, and Emmanuelle Charpentier, a microbiologist now at the Max Planck Institute for Infection Biology. Missing is Feng Zhang (no relation to this writer), a molecular biologist at the Broad Institute and MIT, who actually owns the patents for CRISPR/Cas9 and says that he came up with the idea independently. So let’s say Thomson Reuters gets it right. Could the patent for a discovery go to one scientist, and the Nobel prize for the discovery to someone else?

The two groups — or their patent lawyers, really — are in fact fighting over credit for CRISPR/Cas9. At stake are millions of dollars already poured into rival companies that have licensed patents from the two different groups.

But putting aside all the lawyers and all the money for a moment, obsessing over finding the one true origin of Crispr/Cas9 gets science all wrong. Casting the narrative as Doudna versus Zhang or Berkeley versus MIT is a misapprehension of history, creativity, and innovation. Discovery comes not from a singular stroke of genius, but an incremental body of research. “I’m not a great believer in the flash-of-genius theory. If you are a historian —” says Mario Biagioli, who is in fact a historian of science at UC Davis — “you quickly will realize exactly how many times there are independent discoveries of the same thing.” The dispute over credit for CRISPR/Cas9 is not the result of exceptional coincidence and disagreement. In fact, it illuminates how science always works.

September 4, 2015

Slate: Testosterone changes the brain

Filed under: Europe, Health, Science — Tags: , , , , — Nicholas @ 05:00

Perhaps it’s not just a social construct after all:

However much we’d like to think of gender as a social construct, science suggests that real differences do exist between female and male brains. The latest evidence: a first-of-its-kind European study that finds that the female brain can be drastically reshaped by treating it with testosterone over time.

Research has shown that women have the advantage when it comes to memory and language, while men tend to have stronger spatial skills (though this too has been disputed). But due to ethical restrictions, no study had been able to track the direct effect that testosterone exposure has on the brain — until now. Using neuroimaging, Dutch and Austrian researchers found that an increase in this potent hormone led to shrinkage in key areas of the female (transitioning to male) brain associated with language. They presented their findings at last week’s annual meeting of the European College of Neuropsychopharmacology in Amsterdam.

May 30, 2015

There are no good outcomes from a war between men and women

Filed under: History, Religion — Tags: , , , — Nicholas @ 04:00

Sarah Hoyt digs into the archive to find a particularly appropriate post from the distant past:

I know this goes completely against everything you’ve ever heard and learned. History — and SF — is full of dreamers who are convinced that if women ruled the world it would all be beauty flowers and non aggression. (To these dreamers I say spend a week as a girl in an all-girl school. It will be a rude awakening.)

Dreamers of the Dan Brown stripe posit a peaceful female worship, with yet more beauty and flowers and non-aggression. They ignore the fact that 99% of the goddess-worshipping religions were scary. And don’t tell me that’s patriarchal slander — it’s not. The baby-killing of Astoreth worship has been documented extensively. (Of course, the Phoenicians were equal-opportunity baby killers.) The castrations of Cybele worship were also well documented. Now, I can hardly imagine a female divinity without imagining hormonal episodes requiring appeasement — but that’s because I’m a woman of a certain age, and that’s fodder for another altogether different discussion. Suffice it to say that the maiden and mother usually also had a crone persona who was … er… “not a nice person.”

Anyway — all this to say since I joined the MOB (Mothers Of Boys) the scales about such things as the inherent equality of men and women as far as their brain structure and basic behavior have fallen from my eyes. (Well, the scales that remained. My experience in school notwithstanding, I’d been TAUGHT that females were getting the short end of the stick and that’s a hard thing to overcome. Learned wisdom is so much more coherent than lived wisdom, after all.)

Again — indulge me — I’m going to make a lot of statements I can too back up, but which would take very, very, very long to document — so it will seem like I’m ranting mid air. Stay with it. If I feel up to it later, I’ll post some references.

Yes, women have been horribly oppressed throughout history including the rather disgusting Victorian period that most Americans seem to believe is how ALL of history went. I contend, though, that women were not oppressed by some international conspiracy of males — yes, I know what Women’s Studies professors say. I would however remind you we’re talking of a group of people who a) have issues finding their own socks in the dresser they’ve used for ten years. b) Are so good at communicating as a group that they couldn’t coordinate their way out of a wet paper bag, or to quote my friend Kate, couldn’t organize a bonk in a brothel. (In most large organizations the “social/coordinating” function is performed by females at various levels.) c) That women being oppressed by a patriarchy so thorough it altered history and changed all records of peaceful female religion would require a conspiracy lasting thousands of years and involving almost every male on Earth. If you believe that, I have this bridge in NY that I would like to sell you. — Women were oppressed by their own bodies.

Throughout most of history women had no safe and effective means of stopping pregnancy. — please, spare me the “herbal” remedies. I grew up in a village that had little access to medicine. If there had been an effective means of preventing pregnancy we’d have known it. TRUST me. There are abortificients, but they endanger the mother as well. However, until the pill there was no safe contraceptive. The herbal contraceptive is a plot device dreamed up by fantasy writers. Also, btw, the People’s Republic of China TESTED all these methods (including swallowing live tadpoles at the full moon.) NONE of them worked. SERIOUSLY.*

What this meant in practical fact is that most women were pregnant from menarche to menopause, if they were lucky to live that long. I’ve been pregnant. If you haven’t, take it from me it’s not a condition conducive to brilliant discourse or reasoned logic. On top of that, of course, women would suffer the evils of repeated child bearing with no rest. In effect this DID make women frail and not the intellectual equals of men. And it encouraged any male around to “oppress” them. I.e., when the majority of females around you need a minder, you’re going to assume ALL females need a minder. It’s human nature. Note that beyond suffrage, the greatest advance in women’s equality came from the pill. Not a coincidence, that.

April 3, 2015

Updating the old saying “where there’s muck, there’s money”

Filed under: Economics, Science, Technology — Tags: , , , — Nicholas @ 04:00

According to this story in the Guardian, a typical city of one million people poops out $13 million in (potentially recoverable) precious metals every year:

Sewage sludge contains traces of gold, silver and platinum at levels that would be seen as commercially viable by traditional prospectors. “The gold we found was at the level of a minimal mineral deposit,” said Kathleen Smith, of the US Geological Survey.

Smith and her colleagues argue that extracting metals from waste could also help limit the release of harmful metals, such as lead, into the environment in fertilisers and reduce the amount of toxic sewage that has to be buried or burnt.

“If you can get rid of some of the nuisance metals that currently limit how much of these biosolids we can use on fields and forests, and at the same time recover valuable metals and other elements, that’s a win-win,” she said.

A previous study, by Arizona State University, estimated that a city of 1 million inhabitants flushed about $13m (£8.7m) worth of precious metals down toilets and sewer drains each year.

The task of sifting sewage for microscopic quantities of gold may sound grim, but it could have a variety of unexpected benefits over traditional gold mining. The use of powerful chemicals, called leachates, used by the industry to pull metals out of rock is controversial, because these chemicals can be devastating to ecosystems when they leak into the environment. In the controlled setting of a sewage plant, the chemicals could be used liberally without the ecological risks.

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