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Personal Helicopter

Strap-on ‘CopterThe iconic vision of the technological, space-age future used to be the personal jet pack–a strap-on device that would allow people to zip around the clouds, presumably wherever and whenever they liked.

The jet pack never quite happened, but the dream still has legs. And soon it might come equipped with rotor blades, too. A company in Mexico, Technologia Aeroespecial Mexicana, is working on a “strap-on helicopter” device.

From the picture above you can see that the personal ‘copter has two overhead blades but no tail rotor. Instead, there are tiny rockets at the tips of each blades. Two hydrogen-filled cannisters fuel the blades and you steer with a simple vane in front.

The strap-on ‘copter doesn’t exsit. Yet. At this point it’s still in the “cool-looking computer animation stage.” But according to the company’s website, they have a history of successfully developing lightweight, jet-powered helicopters. Supposedly, so the website claims, they designed a prototype lightweight helicopter for the government of Dubai in the late 1990s.

Anyhow, on the company’s website you can see some pretty cool picture of various ‘copter designed and apparently you can download computer animated version of the strap-on helicopter in action. (Although when I tried to open the animations all I got was a pop-up box filled with computer gibberish.)

Assuming for the moment that the strap-on ‘copter would actually work, I wonder what would happen. You’d need a special license to fly, probably. And I wonder if you’d need to take off from an airport … which would spoil all the fun. What’s cool about the idea of a personal flying device, I think, is that you could wake up in the morning, have your breakfast and coffee, then strap on your jet ‘copter in your driveway and zip off the work. Of course, you’d have to watch out for all the other jet ‘copter commuters up there. How would this work?

Bottom line, I find it heartening that there are still inventors out there trying to make this dream a reality. Whether or not it ever actually happens is sort of irrelevant.

Plus, it remind me of Lawnchair Larry–a guy who in the mid ’80s strapped several weather balloons to a lawnchair and found himself floating 16,000 feet over LAX airport. It’s all part of the same dream of personal flight. Says something interesting, and complimentary, about us as a species.

The Secret Life of Birdfeeders

Backyard FeederMy kids (two boys, 7-year-old-twins) recently made a bird feeder. We painted it, hung it up in the backyard, and waited for birds to come. Now that spring is here, there are more and more birds at the feeder every morning. It’s nice to watch them, my kids learn about nature, the birds get a free treat. It’s all good, right?

Or maybe not. According to a recent paper by Gillian Robb, a postdoc researcher at Queen’s University in Belfast, bird feeders could have ecological ripple effects that harm some birds even as they benefit others.

For example, if you leave your bird feeder out during the winter, birds that stick around to brave the cold will eat seed to their heart’s content. Studies show that winter birds with access to birdseed have a higher survival rate than birds without access. They also have more offspring and breed earlier. But, in some cases, they may breed too early. When the eggs hatch, there’s not enough natural food to feed the chicks.

And here’s another potential problem … birds that plump up on bird seed during the winter have a head start on migrant birds. When the fair weather fliers return during the spring, they face stiff competition for food and breeding territory from winter birds bulked up on seed.

Then, finally, there’s the environmental cost of the more than half a million metric tons of birdseed used every year. Soil is used to grow the seed and fossil fuels are burned to transport it.

So does this mean you should shut down your backyard bird feeder? Not necessarily. First, because they study shows that bird feeders have varied effects. Some birds prosper. Some don’t. And it surely depends on where you live, what the weather’s like, how many species of birds there are competing for resources in a given area, etc.

So no, you should not take this as an admonishment or as a warning to immediately remove your bird feeder. But it is an interesting lesson on the delicate balance of habitats. It’s not always easy to see (and certainly easy to not think about), but how we behave and what we do has serious and immediate effects on the environment. The bird feeders in your neighborhood could tip the ecological balance and give one species of bird enough of an advantage over another. And that will effect which species thrives and which declines.

Food for thought.

Lizard Evolution on the Quick

Italian Wall LizardEvolution is something happens over millions of years, right? Slowly, over eons of time, primates evolve into hominids, hominids in proto-humans, proto-humans into modern homo sapiens.

But evolution doesn’t always unfold at such a crawling pace. Take, for example, the case of several Italian wall lizards left on a small island off the coast of Croatia in the early 1970s. According to a recent piece in National Geographic, just a few decades later, the lizards have evolved a new gut capable of digesting plants, bigger heads and a harder bite.

Here’s what seems to have happened …

After being introduced to the island, within a few years the wall lizards took over and wiped out the native lizard populations. How exactly this happened is a bit mysterious, since the native lizards subsisted on plants, while the invading lizards weren’t built for vegetarian life. Maybe the wall lizards ate insects or other small animals. Maybe they ate the native lizards. In any case, at some point the new lizards fond themselves on an island where the main item on the menu was vegetation. So over several generations, the wall lizards evolved special mechanisms in their guts to digest plants. They also evolved larger heads and a harder bite–all within about 30 generations.

The NG article quotes a biologist, Andrew Hendry, as saying that it’s not clear whether the lizards’ adaptations were genetic in origin or a “plastic response to the environment.” I’m not sure what this phrase means. Isn’t evolution a “response” to the environment? What does the word “plastic” imply.

Anyhow, at the very least, the case of the wall lizards very strongly suggests that, under the right conditions, evolution can occur at a very rapid pace. Given the current climate of skepticism about evolution and the promotion of pseudo-scientific theories like intelligent design, stories like this are all the more important.

By the way, check out this review in the NY Times of the anti-Darwin “documentary” “Expelled.” I took the movie to task in this space a few months back. The review corroborates my argument.

Humanoid Robots and the Uncanny Valley

MDS RobotScientists and engineers at MIT have created a new, experimental robot called Nexi that can appear to express human emotions like anger, surprise and sadness through a series of facial expressions.

The machine is an MDS robot, which stands for mobile, dexterous and social. And, indeed, as you can see in this clip, Nexi is all of those things …

Which raises a few questions. First, why do we want robots to act and appear as human as possible? Do we? I few years ago I remember reading an article in Popular Science about a roboticist named David Hanson who made a working robot head that looked exactly like his girlfriend. Using several motors and other electronic doo-dads covered by a flexible plastic skin molded to look like his girlfriend, Hanson could make the head move and model various facial expressions. And it freaked people out because of a phenomenon called the Uncanny Valley. The basic idea is that people are attracted to robots and avatars that look human–up to a point. But beyond that point–when the robot looks almost but not quite human–people are repulsed. An article in the online magazine Slate makes the point that however good the graphics are in video games, renderings of human figure always come off as decidedly creepy when you see their faces close up. The bodies seem alive but the faces look dead, devoid of any human spark.

Not that this is a problem with Nexi, which looks nothing like a real person and very much like a robot. But Nexi is clearly a step in the direction of making robots look and act like actual people. And I’ve always wondered–why do we feel the need or desire to recreate ourselves in robot form? The most useful robots are ones that look like machines–robot arms on assembly lines, those robot vacuum cleaners that scoot around the floor like oversize hockey pucks … while human-like robots are essentially useless, as far as I can tell. Even in Star Wars, C-3PO was always standing around annoying everyone while R2-D2 did all the hard work. (Although I suppose Data from Star Trek Next Generation was pretty cool, to be fair.)

I’m not trying to make a utilitarian argument. Research and invention are not (nor should they be) necessarily spurred by function or need. Creativity, curiosity and invention are just as important. But this desire for robots that look like us still strikes me as curious. In movies and science fiction literature, at least, androids are almost always dangerous and feared–I, Robot, Aliens and its sequels, 2001, Blade Runner, etc.

Anyhow, I wonder what you think. Would you look forward to a future where robots have become so much like us that it’s hard to tell the difference?

Freaky Fish

http://news.nationalgeographic.com/news/2008/04/080403-fish-photo.htmlWhat you see in the picture to the left is not a muppet. It looks like one, though, doesn’t it? What you’re seeing is a newly discovered fish with a flat face forward-looking eyes and leg-like fins that it uses to crawl along coral reefs.

This weird fish is a kind of anglerfish–the type that typically has a lantern or some other lure on its head to attract prey (like the one in the movie “Finding Nemo”).

For scientists, what’s really cool about this discovery is the possibility that the fish might represent and entirely new fish family. It will take DNA testing to bear that out. For us non-specialists, it’s just kinda cool anytime a new animal is discovered. On a planet where nearly every inch of habitable space is overdeveloped, it’s nice to know that there are still some mysteries lurking out there in the deep.

Just for fun, check out this clip from the Late Late Show on CBS. The host, whoever he is, mentions the fish in his monologue …

[kml_flashembed movie="http://www.youtube.com/v/jRAxhVpG9XA" width="425" height="350" wmode="transparent" /]

Source: National Geographic

Squid Beak Mystery Solved

Squid BeakWhen I was a kid, one of the coolest posters I had in my room was of a sperm whale locked in a death struggle with a giant squid. (Yes, I was a nerdy kid.) And always wondered who came out ahead. the whale had size, obviously, and strength. And teeth, I guess. But the squid had those long, snaking tentacles wrapped around the whale’s massive body. And while the squid had not teeth per se, it did have a pointy beak.

Now, what I didn’t know then is that a squid’s beak is an awesome weapon. It’s one of the hardest and stiffest organic materials known and is supposedly strong enough to bite through steel cable.

But here’s the thing. If you’ve ever seen a squid up close, or even just seen a picture of one or on TV, you know that a squid’s body is kind of gelatinous. Squid’s have no bones. So scientists have been puzzled by how such a squishy creature can operate such a sharp, hard beak without cutting itself to ribbons.

Last week, scientists as UC Santa Barbara uncovered the squid’s secret. Turns out that a squid beak is super-hard at the pointed tip but then gradually becomes softer and more flexible toward the base, where it meshed seamlessly into the squid’s pliant, rubbery tissue.

This is fascinating in its own right. And what fascinates materials scientists and engineers even more is what the composition of a squid’s beak may teach us about how to create materials that are both stiff and flexible, extremely hard at one extreme and relatively more soft at the other. Squid beaks could serve as a model for joining different materials together–like metal and plastic–and for creating new types of medical implants and artificial limbs.

Giant squids are elusive creatures. Scientists know very little about their behavior in the wild and none have been captured alive. Last year, scientists finally got a picture of a giant squid in the wild. Most of what we know about giant squids comes from dead specimens that wash up on shore. But now at least we know something more about their beaks.

Check out this very cool squid documentary:
[kml_flashembed movie="http://www.youtube.com/v/aeG8rHuCIDQ" width="425" height="350" wmode="transparent" /]

Source: Time Magazine

Dinosaurs in Eden

Religion and ScienceHere’s something I bet you didn’t know: Dinosaurs didn’t actually live hundreds of millions of years ago. No. Rather, they were around as recently as about 6000 years ago, when the world was created out of chaos. In fact, dinosaurs lived in the Garden of Eden with Adam, Eve and all the other animals.

At least that’s the story according to the Creation Museum–a 65,000 square foot facility that opened in Hebron, Kentucky in 2007. The Museum’s mission is to, well, here’s how the website puts it:

“Be prepared to experience history in a completely unprecedented way.

The state-of-the-art 65,000 square foot museum brings the pages of the Bible to life, casting its characters and animals in dynamic form and placing them in familiar settings. Adam and Eve live in the Garden of Eden. Children play and dinosaurs roam near Eden’s Rivers. The serpent coils cunningly in the Tree of the Knowledge of Good and Evil … Walk through the Garden of Eden. The Tree of Life, central to the garden, stretches out its branches, laden with ripened fruits. Come face-to-face with a sauropod, a dinosaur of incredible dimensions. His monstrous frame moves through the low-lying thicket as he grazes on plants. Introduce yourself to our chameleons. Examine bones, a clutch of eggs from a dinosaur, an exceptional fossil collection, and a mineral collection. Walk through the Cave of Sorrows and see the horrific effects of the Fall of man. Sounds of a sin-ravaged world echo through the room. Finally, see the sacrificial Lamb on the cross, and the hope of redemption.”

Wow. What’s important to understand here is the brazen conflation of history and mythology, science and theology. And I’m not saying that the Bible is a-historical. Contemporary biblical scholarship has shown that the Hebrew Bible, at least (I’m less familiar with the New Testament), includes many historical elements, i.e., things that can be verified via outside sources such as covalent documents and archaeology. But the story of the Garden of Eden is not one of the historical sections of the bible. It’s a creation myth of great power and beauty and theological significance. But it’s not history.

In any case, the truly remarkable moment in the above passage is the one describing dinosaurs happily munching leaves in the paradisiacal garden. Because here’s were we’re made to understand that the Creation Museum is attempting not only to merge history and mythology but also science and religion.

In fact, dinosaurs are a big deal at the Creation Museum, with good reason. Because if dinosaurs really lived millions of years ago, then the earth can’t be only 6000 years old (as per literal interpretations of the Bible). And if the Bible is wrong on the age of the earth, then it may be wrong on other things, too. It’s a slippery slope. So the Creation Museum offers an alternate story. God created dinosaurs on the 6th day of creation–the same day that God created Adam and Eve. (Proof offered for this theory is Genesis 1:20-25, 31–”Then God said, ‘Let the earth bring forth the living creature according to its kind: cattle and creeping thing and beast of the earth, each according to its kind’; and it was so.”) Later, some dinosaurs were stowed away aboard Noah’s ark during the global flood. Those not aboard were drowned. Their remains became the fossils we see in museums today. Those that were on the ark eventually went extinct due to the changed climate and ecology of the post-flood earth.

Does this make any sense? It depends who you are, obviously. And my point isn’t to debate the merits of biblical literalism vs. other types of biblical interpretation. My point isn’t even to debunk the pseudo-scientific offerings on display at the Creation Museum.

My intention is to point up a serious and disturbing trend in the United States to blend science and theology toward obviously ideological ends. A few weeks ago in this space I wrote about Ben Stein’s upcoming propaganda movie aimed at smearing evolutionary science as racist and elitist. The Creation Museum is part of the same movement.

Now, you may argue that while they may be wacky, things like Stein’s movie and the Creation Museum are so obviously propagandistic and wrong on so many counts that they’re of no consequence. But I’d argue otherwise. These things matter. The Creation Museum drew more than 300,000 visitors in its first year. It’s a state of the art facility with the latest technology. And it feeds a growing anti-intellectual, anti-scientific sentiment in the US. As a science writer, this alarms me. And it should alarm anyone who cares about science and ideas.

So I encourage everyone to check out the Creation Museum online. Or read a review that appeared in the New York Times. Better yet, if you live in the area, visit the museum in person. And let me know what you think.

Fetus in Fetu

Sanju Bhagat Is this man pregnant? Not really. But sort of. There is, in fact, a fetus inside his distended belly. But it’s the fetus of his unborn, malformed twin brother.

I know this sounds like bad science fiction or something straight out of the pages of the National Inquirer. But it’s legit.

Here’s the story . . .

All his life, Sanju Bhagat, a farmer living in the city of Nagput, in India, had a big belly. He wasn’t a fat man; in fact, his face, arms and legs were stick-figure thin. But his stomach was huge. It was so round and oddly taught that Bhagat looked pregnant.

Then, in 1999, the 36-year-old Bhagat started to have trouble breathing. Fearing that the bulge inside his abdomen was caused by a giant tumor, Bhagat was whisked to the hospital for an emergency operation. When the surgeons cut into his belly to remove the tumor, gallons of fluid splashed out. When the lead surgeon reached inside the body cavity to feel around for what they still thought was a tumor, he encountered something entirely unexpected and almost unspeakably grisly: bones, limbs, human hair and a pair of perfectly formed human hands complete with long fingernails.

What the doctors pulled out of Bhagat was the mishappen body of his unborn twin brother.

How is this possible? Bhagat had a bizarre and extremely rare condition called fetus in fetu. What happens is that when the twin feti are in the womb, one gets absorbed by, or trapped inside, the other. This happens very early in pregnancy. One twins grows normally while the trapped lives on as a parasite, leaching off its sibling’s blood supply.

Normally, both twins die in utero because neither gets enough nutrients to survive. But in very rare cases, as with Bhagat, both twins are born alive. The dominant twin grows and develops normally except for a noticeable bulge in his (or her) belly. The nested twin, meanwhile, survives for a time, living as a parasite and feeding off his host’s blood.

How rare is this condition? There are fewer than 90 known cases in medical history. And in most of those instances, the entombed twin is discovered and excised early on.

But, incredibly, Bhagat carried his brother inside him for three and a half decades.

Today, Bhagat is reportedly fine and lives a relatively normal life–at least as normal as one can be knowing that you gave birth to your own twin.

But hey, stranger things have happened. Or, actually, maybe not. This is probably one of the strangest things that can happen to anyone.

Source: ABC News

If you can’t get enough of this strange tale, check out the video below. But be warned: some of the images are pretty disturbing. This footage is not for the squeamish.

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Dolphin Saves Stranded Whales

Moko the DolphinDolphins are known to be friendly, intelligent and social. But altruistic?

Yes, apparently. At least if you’re a pygmy whale.

Just yesterday, a dolphin known as Moko helped save two pygmy whales–a mom and her calf–who were in danger of being stranded on a beach on the east coast of New Zealand’s North Island.

Rescue workers tried in vain for more than an hour to orient the whales, to no avail. But then along came Moko, and within moments the dolphin had the whales swimming back out to sea and basically saved their lives. (See a video of Moko here.)

Moko has been a regular visitor to the beach, hanging out to play with swimmers. He (or is it she?) happened along just at the right time to help the whales. Experts think that Moko heard the whales’ distress calls, swam right up to them and saved the day. It’s the first time anyone’s seen or heard or a dolphin doing such a thing.

Scientists don’t know why whales get stranded on beaches. And when it happens, the beached whales almost always die. But at least two were saved, thanks to Moko.

Source: Reuters

Ben Stein’s Intelligent Design Movie

Movie PosterA movie called “Expelled,” pitting intelligent design against Darwinism and featuring actor and conservative writer Ben Stein, is due out in theaters this April.

Let’s begin by acknowledging that movie trailers can be misleading. Perhaps this film is a fair-minded, even handed investigation of the place of religion in academic science. As a former grad student in the humanities who somehow managed to earn a Ph.D. in English lit, I have first-hand experience with the biases and sometimes insular thinking of the academy.

However, based on repeated viewings of the trailer, it appears that Expelled is merely a slick, well-produced bit of creationist propaganda–the latest conservative salvo in the ongoing culture wars timed to strike during an election year.

The film’s argument, such as it is, is that any scientist in (and presumably also out) of academia who dares to question the theory of evolution is immediately shunned, ridiculed and denied tenure. As such, “Big Science,” as it’s called in the movie, is accused of systematically oppressing scholars who dissent from the mainstream, Darwinist line–a point underscored, bizarrely, with images of the ovens at Auschwitz.

Let’s pause here for a second. The trailer, which lasts perhaps five minutes, includes two prominent references to Nazi Germany–one clip shows Hitler making a speech, the other shows various concentration camps and emaciated Holocaust victims. The film maker’s intention, I assume, is to obliquely compare the oppressive tactics of “Big Science” to the genocidal policies of the Nazis. (And, by extension, the film equates the dissenting scientists it champions with victims of the Holocaust.)

Check out the trailer here:

[kml_flashembed movie="http://www.youtube.com/v/JEPqLKErXpI" width="425" height="350" wmode="transparent" /]

At first this struck me as supremely weird. But then it seemed to make sense. Intelligent design and its precursor, creationism, have always had about them a whiff of desperation, an overeagerness to be taken seriously as bone fide science. Because that has not happened, proponents of intelligent design now resort to Michael Moore-like tactics of overkill and extreme, unabashed propaganda.

I don’t want to get into the nitty gritty of intelligent design vs. evolution. There’s been a ton written about that, and you can read a good overview of the opposing viewpoints here and here.

But I do want to address the claim that scientists are being persecuted in academe because they challenge Darwin. Academe has its pros and cons, but overall it remains valuable as one of the few institutions where almost anything goes. Spend a few moments online and you’ll find papers written by professors arguing some of the strangest things. And this is good. Academics are for the most part professional skeptics, people trained to question, doubt and verify. Scientists are especially careful. You’ll rarely hear a scientist make a claim that something is outright true or that they’ve definitively proved something or once and for all solved a problem. As a science writer, I spend a lot of time talking with scientists about their research, and they’re always careful to explain that their findings are inconclusive, or incomplete, or open to question. In short, there are very few absolute truths in science.

But the Darwinian theory of evolution comes about as close as you can to attaining the status of rock-solid fact. Over the past century and a half, supporting evidence has piled up. In fact, the evidence is overwhelming. Einstein’s theory of general relativity seemed utterly odd and contrary to common sense when it was first proposed. But the evidence backs it up, so we accept E=MC2 as fact. The same can be said for evolution.

So if there are in fact scientists out there whose careers have been derailed by their support for intelligent design, it’s not due to the sinister machinations of an evil, “Big Science” cabal. It’s because the scientists in question produced shoddy work. Natural selection is a testable theory that’s been verified time and again. Intelligent design is a theological concept that cannot be definitively tested and proven either correct or incorrect. Ergo, it’s not science.

And that’s the main point. There’s plenty of room in academe for creationism and intelligent design–in departments of religion, philosophy, sociology and other disciplines. But intelligent design is not science. And scientists who stake their reputations defending it as such are taking a risk in the same way that an astronomer who argues that the sun revolves around the earth (an idea once accepted as gospel truth) is certain to be met with ridicule.

Again, to be clear, I’m basing this entirely on a five minute trailer. So go see the actual movie when it comes out and make up your own mind about its merits. And let me know what you think.

Sources: Expelled website, Skeptic’s Dictionary


About

U. S. science writer Jeremy Shere writes frequently about weird and bizarre science for the Earth & Sky radio series. Jeremy also writes and produces for several other radio programs and writes for a variety of magazines.

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