Quotulatiousness

September 23, 2012

Are we really smarter than our great-grandparents?

Filed under: History, Science — Tags: , , , , — Nicholas @ 09:48

An interesting article in the Wall Street Journal looks at the documented phenomenon of rapidly rising IQ in modern humans:

Advanced nations like the U.S. have experienced massive IQ gains over time (a phenomenon that I first noted in a 1984 study and is now known as the “Flynn Effect”). From the early 1900s to today, Americans have gained three IQ points per decade on both the Stanford-Binet Intelligence Scales and the Wechsler Intelligence Scales. These tests have been around since the early 20th century in some form, though they have been updated over time. Another test, Raven’s Progressive Matrices, was invented in 1938, but there are scores for people whose birth dates go back to 1872. It shows gains of five points per decade.

In 1910, scored against today’s norms, our ancestors would have had an average IQ of 70 (or 50 if we tested with Raven’s). By comparison, our mean IQ today is 130 to 150, depending on the test. Are we geniuses or were they just dense?

[. . .]

Modern people do so well on these tests because we are new and peculiar. We are the first of our species to live in a world dominated by categories, hypotheticals, nonverbal symbols and visual images that paint alternative realities. We have evolved to deal with a world that would have been alien to previous generations.

A century ago, people mostly used their minds to manipulate the concrete world for advantage. They wore what I call “utilitarian spectacles.” Our minds now tend toward logical analysis of abstract symbols — what I call “scientific spectacles.” Today we tend to classify things rather than to be obsessed with their differences. We take the hypothetical seriously and easily discern symbolic relationships.

September 20, 2012

Potentially deadly legacies of war

Filed under: Environment, History, Military, Weapons, WW1, WW2 — Tags: — Nicholas @ 15:41

A long, fascinating, disturbing blog post at SciencePunk on unexploded munitions from both World War 1 and World War 2, still showing up unexpectedly:

The WMD was discovered, quite by chance, lying by the side of a Bridgeville road in late July by a Delaware state trooper on an unrelated callout. Jutting out of the ground, the 75mm shell was encrusted in barnacles and pitted with rust; barely recognisable as a munition at all. The trooper called in his find and a military team took the bomb to Dover Air Force Base for disposal. As with most conventional rounds, a small charge was placed on the side of the shell and detonated to trigger the vintage munition’s own explosive. But something went wrong, and the bomb failed to explode.

When the two staff sergeants and technician walked over to inspect the failed detonation, they found a strange black liquid seeping out of the cracked mortar. Given that the shell had been under the sea for the better part of fifty years, the men thought little of the foul-smelling substance until hours later, when their skin began to erupt in agonising blisters. All three were rushed to Kent General hospital, where two were released later after minor treatment. A third, more seriously injured serviceman was transported to Temple University Hospital in Philadelphia, where he remained in serious but stable condition with what were only described as “burns or blisters” in a statement issued by the Army later that week. A scientific team were sent to Dover to collect soil samples from the area. The results were clear: the shell had been filled with mustard gas. The United States’ forgotten weapons of mass destruction had returned to haunt it.

[. . .]

With three servicemen now lying in hospital, injured by a weapon of mass destruction, officials could no longer ignore the problem of the rogue munitions. On August 4, the U.S. Army announced a $6 million plan to locate and stem the source of the clamshell ordnance. The investigation was led by Robert Williams Jnr of the Army’s Corps of Engineers. It seemed like an impossible task – Williams couldn’t search every clamshell-topped road in the state, and even if he did, there’d be no guarantee he could complete the survey before one of the hidden weapons detonated. Worse still, nobody knew how the munitions were getting from the ocean into driveways, and how to stop more arriving. Then Williams was handed a gigantic stroke of luck: interviews with everyone who discovered ordnance in their driveways revealed that they had all purchased their clamshell mix from one hauler, Perry Butler. And Perry Butler had an exclusive contract to collect waste clamshells from one Milford clam processing plant: SeaWatch International.

As Delaware’s only clam processor, suspicion had already been placed on the Milford plant. In spite of initial claims that no ordnance had been found on site, when the U.S. Army turned their attention to the factory, it was already the subject of an ongoing investigation by the Occupational Safety & Health Administration. On inspecting the facility, their suspicions were confirmed: twelve munitions were recovered onsite. Workers had picked the highly unstable ordnance off the conveyor lines and stored them in a bucket of water in the basement. The munitions that they did not spot had been first plunged into conditioning tanks with the live clams, passed through steam cookers, and then raked across an industrial shucker that violently shakes the cooked meat from the shells. From there, the ordnance was picked up by Perry Butler, hidden in containers of empty clamshells, who passed them through a grinder that pulverised the shells into gravel before selling the fill on to various downstate residents. That none of the munitions exploded at any point was nothing short of miraculous. That no chemical rounds had broken open or leaked, even more so. SeaWatch International was fined $9,000 by OSHA for endangering staff and only permitted to continue business with the installation of $15,000 metal detector. Just three days later, the buzzer sounded. Workers reported the discovery of a 75mm shell, identical to the one that had injured three servicemen at Dover.

The problem is much bigger than the incidents in Delaware, however, as all the combatant nations of WW1 dumped their unused chemical weapons into the sea … and not always safely (and that really deserves scare quotes: “safely”).

With the close of the First World War, both defeated and victorious nations of the world were left holding thousands of tonnes of lethal chemical weaponry and no one to launch them at. The weapons were dangerous to transport and difficult to store. And nobody really knew how to neutralize their contents. So it’s easy to see how dumping the weapons in the deep ocean, out of harm’s way, was seen as a sensible solution. Entire ships were loaded with munitions, chemical and conventional alike, and sailed out to sea where the cargo was thrown overboard. As part of the CHASE program (“Cut Holes And Sink ‘Em), entire ships filled with weapons and unwanted hardware were scuttled, some detonating on their way to the seabed. For many decades, countries cast their surplus chemical weapons into ocean water and forgot about them. Over a quarter million tonnes of British bombs filled with mustard and phosgene gas and the nerve agent Tabun lie in the waters around the UK, concentrated off the west coast of Scotland. Somewhere between 50,000 and 300,000 tonnes of German, Soviet, US and British chemical agent lies in the shallow Baltic Sea. The USA has also admitted to dumping toxic materiel off the coastlines of other nations rather than risk carrying the volatile cargo home. The James Martin Centre for Non-Proliferation Studies lists 127 known dumpsites across the world, it’s likely even more exist.

September 19, 2012

Jacob Sullum on the legacy of Thomas Szasz

Filed under: Health, Law, Liberty — Tags: , , , — Nicholas @ 08:48

Jacob Sullum‘s post on the influence the late Thomas Szasz had and continues to have:

The idea that psychiatry became scientifically rigorous soon after Szasz first likened it to alchemy and astrology is hard to take seriously. After all, it was not until 1973 that the American Psychiatric Association (APA) stopped calling homosexuality a mental disorder.

More often, psychiatry has expanded its domain. Today it encompasses myriad sins and foibles, including smoking, overeating, gambling, shoplifting, sexual promiscuity, pederasty, rambunctiousness, inattentiveness, social awkwardness, anxiety, sadness, and political extremism. If it can be described, it can be diagnosed, but only if the APA says so.

[. . .]

For more than half a century, Szasz stubbornly highlighted the hazards of joining such a fuzzy, subjective concept with the force of law through involuntary treatment, the insanity defense, and other psychiatrically informed policies.

Consider “sexually violent predators,” who are convicted and imprisoned based on the premise that they could have restrained themselves but failed to do so, then committed to mental hospitals after completing their sentences based on the premise that they suffer from irresistible urges and therefore pose an intolerable threat to public safety. From a Szaszian perspective, this incoherent theory is a cover for what is really going on: the retroactive enhancement of duly imposed sentences by politicians who decided certain criminals were getting off too lightly — a policy so plainly contrary to due process and the rule of law that it had to be dressed up in quasi-medical, pseudoscientific justifications.

Szasz specialized in puncturing such pretensions. He relentlessly attacked the “therapeutic state,” the unhealthy alliance of medicine and government that blesses all sorts of unjustified limits on liberty, ranging from the mandatory prescription system to laws against suicide.

September 18, 2012

Don’t give up hope for warp engines just yet

Filed under: Science, Space, Technology — Tags: , , , , — Nicholas @ 11:28

As we all know, Star Trek‘s faster-than-light warp engines were mere plot devices, not actual ones. There’s no way to travel faster than light, so even our great-grandkids won’t be tripping off to distant (or even nearby) star systems. But wait … NASA’s Harold White looks poised to become the latest hero of the “we wanna go faster than light” brigade:

A top NASA boffin has outlined ongoing lab experiments at the space agency aimed at first steps towards the building of a warp-drive spacecraft theoretically capable of travelling at 10 times the speed of light.

The latest developments at the “Eagleworks” super-advanced space drive lab at NASA’s Johnson Space Center were outlined by NASA physicist Harold White at a conference on Friday. The Eagleworks lab was set up at the end of last year to look into such concepts as the Quantum Vacuum Plasma Thruster and also so-called “warp drives” along the lines proposed by Mexican physicist Miguel Alcubierre in the 1990s.

[. . .]

Unfortunately, subsequent investigation appeared to show that while the warp drive might work it would be unfeasibly power hungry: it would require a minimum amount of energy equivalent to completely annihilating the mass of the planet Jupiter.

However White and his NASA Eagleworks colleagues say that’s not necessarily so: it’s all down to the shape of the ring. An improved doughnut design, as opposed to a flat ring, would get the requirement down to something more like just annihilating the Voyager One probe craft.

Voyager masses in the region of 800kg, so by our calculations one would still need a lump of antimatter (or other reasonably compact super power source) which — if it were mishandled — would explode with a force of some 17,000 megatons, equivalent to several global nuclear wars all in one (or 600-odd Tunguska meteor strikes etc). This would inconveniently take humanity’s current atom labs billions of years to make, and there would be other practical issues (see our previous antimatter-bomb analysis here, and then there’d be the exoto-doughnut to fabricate etc).

September 11, 2012

Thomas Szasz, RIP

Filed under: Books, Health, Liberty, USA — Tags: , , — Nicholas @ 11:25

A brief obituary notice for Thomas Szasz:

Thomas Stephen Szasz, M.D., 92, died at his home in Manlius, N.Y. on September 8, 2012. He was born in Budapest, Hungary in 1920, and emigrated to the United States in 1938. He graduated the University of Cincinnati with an undergraduate degree in physics in 1941, and as valedictorian of the medical school in 1944. After medical internship at Boston City Hospital and psychiatry residency at the University of Chicago, he pursued psychoanalytic training. [. . .] He argued that what are called mental illnesses are often better described as “problems in living,” and he opposed involuntary psychiatric interventions. His reputation in defense of these principles was launched in 1961 with The Myth of Mental Illness. He published 35 books, translated into numerous languages, and hundreds of articles in the subsequent 50 years.

More evidence that a bit of dirt can be a healthy thing for kids

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

Matt Ridley reviews a new book by Moises Velasquez-Manoff:

In a remarkable new book, “An Epidemic of Absence,” Moises Velasquez-Manoff draws together hundreds of such studies to craft a powerful narrative carrying a fascinating argument. Infection with parasites prevents or ameliorates many diseases of inflammation. The author briefly cured his own hay fever and eczema by infecting himself with hookworms-before concluding that the price in terms of diarrhea and headaches was too high.

I’ve touched on the “hygiene hypothesis” in these pages before. In its cartoon form the argument-that in a clean world our immune system gets bored and turns on itself or on harmless pollen-isn’t very convincing. But Mr. Velasquez-Manoff makes a far subtler, more persuasive case. Parasites have evolved to damp our immune responses so that they can stay in our bodies. Our immune system evolved to expect parasites to damp it. So in a world with no parasites, it behaves like a person leaning into the wind when it drops: The system falls over.

Moreover, just as brains outsource much of their development to the outside world-the visual system is refined by visual input, the language system can only develop in a language-using society — so the immune system seems to have happily outsourced much of its regulation to friendly microbes. Without them, the immune system becomes unbalanced.

[. . .]

One of Mr. Velasquez-Manoff’s most surprising chapters is on autism, a disorder that almost exactly parallels asthma in its recent rise among affluent, urban, mainly male, disproportionately firstborn people. Better diagnosis explains perhaps half the rise, but the brains of people with autism are often inflamed, and there’s anecdotal evidence that infection with worms or viruses can tame autistic symptoms, at least temporarily.

September 10, 2012

Warren Ellis on the near-future of 3D printing

Filed under: Food, Science, Technology — Tags: , — Nicholas @ 11:03

Warning: Warren Ellis is not one to mince his words (especially early in the morning). This is his first of a weekly column for Vice UK:

3D printing’s been around for a little while now, and it’s improving in leaps and bounds. On one end of the scale, I was talking to someone from a very famous special effects studio the other week, who was telling me they now have the facility to print cars. One of their wizards took a current-day standard 3D printer (which tend to look like dodgy breadmakers), took it apart to see how it worked, and then used it to print the parts to make a massively larger 3D printer, which he then used to print off a car. Street-furniture set-dressing for movies.

On the other end of the scale, home 3D printers like the Makerbot Replicator now cost twelve hundred quid and can crank out several thousand different objects. It’s a start. (A cheaper machine, the Stratasys, was recently used to print off a gun, after all.)

A start that led to a lot of other people thinking about what else could be printed. NASA have been developing something they call a “bioreactor” since the 1980s, wanting to supply long-haul astronauts with the onboard ability to perform skin and bone grafts by cloning and growing tissue. This has been developed into the idea of printing meat. Printed meat would be ethical meat, as nothing has to die in order to make it. The one drawback being that cultured meats of any kind tend to have textural issues: they’ve not been stuck to anything alive that can flex and secrete into it, so they’re kind of limp and nasty and may have to be artificially “exercised” by mechanical systems or electroshock therapy. A fine printed steak would have convulsed under electrical torture many hundreds of times before it reached your plate.

I don’t actually have a problem with that, but I am a full-on omnivore who is looking forward to being able to print off dolphin-and-mastodon sandwiches. You can, however, understand the reticence of those who gave up meat for ethical reasons being served a pork chop that’s been worked on a rack and then electrocuted for your pleasure.

September 6, 2012

It’s time to retire the pop-sci term “Junk DNA”

Filed under: Health, Science — Tags: , , — Nicholas @ 08:42

In the Wall Street Journal, Gautam Naik and Robert Lee Hotz report on the most recent discoveries about the human genome:

The new insight is the product of Encode, or Encyclopedia of DNA Elements, a vast, multiyear project that aims to pin down the workings of the human genome in unprecedented detail.

Encode succeeded the Human Genome Project, which identified the 20,000 genes that underpin the blueprint of human biology. But scientists discovered that those 20,000 genes constituted less than 2% of the human genome. The task of Encode was to explore the remaining 98% — the so-called junk DNA — that lies between those genes and was thought to be a biological desert.

That desert, it turns out, is teeming with action. Almost 80% of the genome is biochemically active, a finding that surprised scientists.

In addition, large stretches of DNA that appeared to serve no functional purpose in fact contain about 400,000 regulators, known as enhancers, that help activate or silence genes, even though they sit far from the genes themselves.

The discovery “is like a huge set of floodlights being switched on” to illuminate the darkest reaches of the genetic code, said Ewan Birney of the European Bioinformatics Institute in the U.K., lead analysis coordinator for the Encode results.

September 5, 2012

The positive side to rising food prices

Filed under: Economics, Environment, Food — Tags: — Nicholas @ 09:06

Tim Worstall responds to an article by Michael Hanlon:

    The storm is coming. One of the great dependables of modern life — cheap food — may be about to disappear. If a growing number of economists and scientists are to be believed, we are witnessing a historic transition: from an era when the basics of life have been getting ever more affordable, to a new period when they are ever more expensive.

Ah, no, I’m afraid you’ve not understood the projections. Yes, food is expected to become more expensive. But also more affordable at the same time.

For the driving force of the rise in food prices is expected to be that people are getting richer. Thus able to afford three squares a day, some of them even containing meat. The rise in incomes is expected to be greater than the rise in food prices: thus food becoming both more expensive and more affordable as a portion of incomes.

BTW, if you think that’s not how the word affordable is used in such contexts then do speak to the booze puritans. They say exactly this: booze has become more expensive but cheaper as a portion of incomes: more affordable.

And if incomes do not rise as predicted we don’t expect to see the food price rises. For it is not the idea of 10 billion people that is predicted to raise the prices. It’s the idea of billions currently on $2 a day becoming billions on $20 that is.

Also, as I’ve mentioned before, a significant part of the rise in global food prices is driven by particularly stupid government policies on ethanol production.

Our conflicted feelings about athletes “juicing”

Filed under: Football, Health, Science, Sports — Tags: — Nicholas @ 08:13

In a sport that most people don’t care about unless a local player is doing well internationally (competitive cycling, for example), a scandal over performance enhancing drugs is a good opportunity to make noises about the “purity of the sport” and demand major sanctions against those who cheat. However, as Jim Souhan points out at the Star Tribune, we’re rather good at turning a blind eye to the same thing in sports we care more about:

The advent of the NFL season will provide a respite from sports riddled with performance-enhancing drugs, such as baseball and cycling.

If you can read that sentence without laughing, you are one naive fan.

We know many baseball players cheated in the ’90s and early 2000s, and we know some cheat today. For every Melky Cabrera who gets caught there must be dozens, if not hundreds, who are smart enough to avoid testing positive in a system that is easy to beat.

We know cyclists cheat. The evidence is overwhelming. When Lance Armstrong pretended to take a principled stand by abandoning his legal fight to defend himself, he was avoiding facing public testimony by a squadron of former teammates. Now another former teammate, Tyler Hamilton, has written a book in which he details his own, and Armstrong’s, cheating, and other former Armstrong associates are speaking openly about his PED use.

[. . .]

If Armstrong could avoid testing positive for PEDs while winning the Tour de France seven times, what does that tell us about the National Football League, a sport filled with the biggest, strongest, fastest and most explosive athletes in our society?

That’s right: The NFL must be stuffed with performance enhancers.

The difference is that we don’t care.

September 4, 2012

True-but-misleading factoid: “7 kg Of Grain To Make 1 kg Of Beef”

Filed under: Economics, Environment, Food, Health — Tags: — Nicholas @ 00:05

Tim Worstall on the mis-use of a vegetarian-friendly data point:

I asked Larry Elliott where the number came from and was sent this from Fidelity Investments (not online so far as I know).

    The demand for more protein has a significant knock-on impact on grain demand. Livestock is reared on grain-feed, making production heavily resource intensive. Indeed, it takes 7 kilograms of grain to produce just 1 kilogram of meat. As demand for meat rises, this increases the demand for and prices of feedstock — these increased costs of productions flow back to the consumers in the form of higher meat prices. Adding to the upward pressure on feedstock price and much to the dislike of livestock farmers, have been US environmental regulations (the Renewable Fuel Standard) that require a proportion of corn crops be used for the production of bio-fuel.

So, case closed, right? We all need to give up eating meat to save Mother Gaia? Not necessarily. The numbers given are accurate, but only in a particular context: that of raising meat for the US (and, probably, Canadian) market. The rest of the world doesn’t do it this way:

It is only in US or US style feedlot operations than cattle are fed on this much grain. Thus the equation is useful if you want information about what is going to happen with US cattle and grain futures: for that’s the general production method feeding those cattle futures. But very little of the rest of the world uses these feedlots as their production methods. I’m not certain whether we have any at all in the UK for example, would be surprised if there were many in the EU. Around where I live in Portugal pigs forage for acorns (yes, from the same oak trees that give us cork) or are fed on swill, goats and sheep graze on fields that would support no form of arable farming at all (they can just about, sometimes, support low levels of almond, olive or carob growing). Much beef cattle in the UK is grass fed with perhaps hay or silage in the winters.

My point being that sure, it’s possible to grow a kilo of beef by using 7 kilos of grain. But it isn’t necessary. The number might be useful when looking at agricultural futures in the US but it’s a hopelessly misguiding one to use to try and determine anything at all about the global relationship between meat and grain production. And most certainly entirely wrong in leading to the conclusion that we must all become vegetarians.

Which brings us to the lesson of this little screed. Sure, numbers are great, can be very informative. But you do have to make sure that you’re using the right numbers. Numbers that are applicable to whatever problem it is that you want to illuminate. If you end up, just as a little example, comparing grain to meat numbers for a specific intensive method of farming really only used in the US then you’re going to get very much the wrong answer when you try to apply that globally.

September 3, 2012

A bit of common sense in food news

Filed under: Environment, Food, Health, Media — Tags: , , , — Nicholas @ 10:39

Rob Lyons reviews a new book by Mike Gibney that attempts to bring some common sense back to counteract the epidemic of fear-mongering about food:

Given much of the popular discussion about food, it would be easy to despair that we face a future where half the world’s people starve to death while the other half drown in their own fat. The words ‘new food research’ in a news report are often just the lead into another sorry tale about how some aspect of what we eat is going to kill us or how some specific food will provide ‘miracle’ protection against the chronic illnesses of our age.

Professor Mike Gibney’s new book, Something to Chew On, is a welcome step back from all this noise, offering an expert take on many of these claims. Gibney is director of the Institute of Food and Health at University College Dublin and has served on many national and international advisory committees.

[. . .]

Take pesticides, for example. Many people are prepared to pay through the nose to buy organic food which is free of artificial pesticides. But as Gibney points out, those people are actually consuming a far greater weight in natural, plant-produced pesticides that are potentially every bit as cancer-inducing as modern chemicals. ‘Nature abounds with chemicals which, while beautifully natural, are nevertheless risk-laden’, he says, from the deadly poison ricin, found in castor beans, to substances in fava beans that induce a lethal form of anaemia in some susceptible people. The key is in the dose: for both natural compounds and their highly regulated artificial counterparts, the amounts that we actually eat are too small to represent any threat to health.

Indeed, Gibney goes on to make mincemeat of all of the claims made for organic foods: they don’t taste better than conventional crops, they offer no nutritional advantage, and, by being less productive, they are actually wasteful of land. That’s hardly environmentally friendly.

Part of the reason we get such overblown nutritional and health “advice” from the media is the difficulty of conducting nutrition research:

While trying to figure out the effect of eating, or not eating, a particular kind of food on cancer or heart disease, for example, there are numerous confounding factors that get in the way of drawing robust conclusions. People lie about what they eat or simply don’t record it accurately; factors that look like cause and effect can turn out to be mere associations. Even finding enough subjects to look at the effect of diet on a relatively unusual disease, like ovarian cancer, can be very difficult.

[. . .]

The truth is that every study’s results need to be treated with caution and there needs to be open-mindedness about other possible explanations. While it is relatively easy to see the effects of vitamin deficiency, for example, for the most part nutrition research moves forward on the basis of a lot of evidence that is unsatisfactory in one way or another. The endless stream of claims that red meat, sugar, eggs and myriad other foodstuffs cause harm should be treated with an almighty pinch of salt (as do claims about salt, for that matter).

Along the way, Gibney offers his thoughts on personalised nutrition — the possibility of creating diets specifically suited to our own DNA — and epigenetics — the idea that different elements of our DNA can be switched on or off by environmental factors in the womb or the first years of life. He also offers a Jacques Cousteau-like tour of the human gut. Did you know there are 10 times more bacteria living in our guts — 100 trillion — than there are cells in the human body? Did you know those bacteria can sometimes switch on or off changes in our bodies to suit their own needs? Gibney describes our relationship to this mass of bugs as a permanent state of ‘armed peace’, with mutual benefits to both parties: body and bacteria.

August 31, 2012

Colby Cosh on Neil Armstrong’s finest moment

Filed under: History, Space, Technology — Tags: , , , — Nicholas @ 10:30

No, it’s not what you think at all:

On March 16, 1966, Armstrong and future Apollo 15 moonwalker David R. Scott became the first human beings to dock an orbiting spacecraft with an independently launched satellite, the Agena. (As proofs-of-concept go, this one has been more important to spaceflight than the moon landings.) The procedure proved surprisingly unchallenging; when the Gemini capsule nosed into place, Armstrong blurted out, “It’s really a smoothie!” The Gemini-Agena combo — mankind’s first “space station” — moved out of radio contact with mission control 28 minutes later. When it came back in range after another 15, Armstrong’s first words were, “We have serious problems here.” A wiring problem had left one of the attitude thrusters on Gemini stuck in the “on” position — firing continuously and causing an increasing left roll. Unsure what was causing the problem, Armstrong made the snap decision to separate from the Agena. But the problem was on their side, and without the Agena’s inertia, the Gemini craft began to spin even faster.

Press accounts said the pair were spinning at about one revolution per second. Senior mission controller Chris Kraft has since noted that their peak rotation was actually 550 degrees a second. Only a trained test pilot could make good decisions while whirling around in freefall 90 times a minute — and Armstrong justified the use of test pilots in space for all time by using Gemini’s re-entry thrusters to dampen the roll and save himself and Scott. By rule, the use of those thrusters meant the mission had to be aborted early. Armstrong and Scott suffered tense hours as they waited to see if they would splash down short of their Pacific landing zone, on the soil of Communist China.

Armstrong was rueful about the abort, which cost Scott the chance to make a spacewalk and cut short the experiment with Agena. But NASA was impressed. One of the agency’s main concerns before the moon missions was that astronauts trying to set down the lunar module would refuse to abort the landing, even if they ran too short on fuel to leave the moon. Armstrong, alone among astronauts of the time, had established a record of outstanding sanity in the face of an emergency. He would probably like to be remembered for that — for making the right choice, a pilot’s choice — at least as much as for the trail he left in the dust of the moon.

Innovative ways to use huge surplus of beetle-blighted lumber

Filed under: Cancon, Environment, Technology — Tags: , , , — Nicholas @ 09:07

British Columbia has a problem with their trees: too many of them are dead due to a massive increase in the population of the mountain pine beetle. The province is searching for ways to cope with the lumber from all the beetle-killed trees:

When life hands you lemons, goes the old saw, make lemonade. But what if life should hand you 18m hectares (44m acres) of dead trees? That is the problem faced by the province of British Columbia in Canada, which could lose over half its pine trees to the depredations of the fearsome mountain pine beetle. The beetle, no bigger than a grain of rice, is native to the forests of Western North America, where it kills trees by releasing a blue stain fungus that prevents the flow of water and nutrients. While the insect was historically kept in check by spells of cold weather, years of mild winters have unleashed an outbreak whose spread and severity is unlike anything seen previously.

As a result, the province is peppered with billions of dead, grey trees. If they are simply left standing, they will eventually either decay or burn in forest fires. In either case, they will release the carbon dioxide they stored while growing, swelling Canada’s total carbon footprint from 2000 to 2020 by 2%.

[. . .]

Canadian researchers have discovered other uses for BKP. Sorin Pasca, a graduate student at the University of Northern British Columbia, found that rain and snow conveniently wash out sugars and other organic compounds from dead pine trees. By grinding up the dry BKP and adding it to normal cement, he created a hybrid material that is waterproof, fire-resistant and pourable like concrete but that can be worked, cut and nailed or drilled like wood. The material, dubbed Beetlecrete, has already been used to make countertops, benches and planters.

Even more esoteric uses for BKP are on the table. Nanocrystalline cellulose, made up of microscopic needle-like fibres, is a lightweight, ultra-rigid material that can be extracted from wood pulp. Currently used to improve the durability of paints and varnishes, nanocrystalline cellulose promises strong, iridescent films that may find uses in industries ranging from optical computing to cosmetics. And, as a last resort, dead and fallen pine trees can feed British Columbia’s 800MW of bio-mass power plants, which burn pellets of BKP and other waste wood to generate electricity.

August 30, 2012

Exaggerating your points to make them seem more important than they are

Filed under: Economics, Environment, Food, Media — Tags: , , , — Nicholas @ 11:05

Geoff Chambers does a bit of Google searching to track down a few of the claims made in Stephen Emmot’s critically acclaimed one-man show “Ten Billion”:

The reviews were full of superlatives. The Times’ critic calls it “utterly gripping, terrifyingly lucid”; Time Out: “monumentally sobering”; Billington in the Guardian: “one of the most disturbing evenings I have ever spent in a theatre”; the Financial Times: “one of the most disturbing shows I have seen on a stage”; the Mail on Sunday “certainly the most scary show in London”. Almost all of them cite Emmott’s conclusion: “We’re f*cked”.

Here are some of the key “facts” (or “f*cts”) cited by Emmott and picked up by critics. (It is of course impossible to check whether the critics have quoted Emmott correctly, since no record of what he says exists):

1) A google search uses as much electricity as boiling a kettle.

2) It takes 3,000 litres of water to make a hamburger, (that’s 10 trillion litres of water annually to sustain the UK’s burger industry).

3) It takes 27,000 litres of water to make a bar of chocolate

4) Animal species are currently going extinct at a rate 1,000 times their natural level.

5) Bangladesh will be under water by the end of the century.

TL;DR for those who don’t feel up to reading the whole thing: 1) false, by a factor of 100. 2) true-ish, but massively misleading. 3) false, or Emmott eats humongous chocolate bars. 4) false, even though Wikipedia thinks it’s true. 5) false, the land area of Bangladesh has actually grown over the last 50 years thanks to land reclamation projects.

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