For nerd-alert-y things from people who have lived on Park Street. Duh.
Sunday, December 14, 2008
"The Atlas of True Names reveals the etymological roots, or original meanings,
of the familiar terms on today's maps of the World and Europe.
For instance, where you would normally expect to see the Sahara indicated,
the Atlas gives you "Sea of Sand", derived from Arab. es-sahra "desert, sea of sand".
The 'True Names' of 1500 cities, countries, rivers, oceans and mountain ranges
are displayed on these two fascinating maps,
each of which includes a comprehensive index of derivations."
http://www.kalimedia.com/Atlas_of_True_Names.html
Saturday, November 22, 2008
Icosahedral roman gaming die
Monday, October 27, 2008
Saturday, September 13, 2008
Think like a bacterium
5 Pioneering Scientists Win Lasker Medical Prizes
By LAWRENCE K. ALTMAN
.... An American microbiologist, Stanley Falkow of Stanford University, was honored for greatly expanding knowledge of disease-causing microbes, ranking him as “one of the greatest microbiologists of all time,” the Albert and Mary Lasker Foundation said in making the awards.
... Dr. Falkow, 74, was honored for his discoveries that grew out of an extraordinary ability to imagine himself as a bacterium so he could view the world from the microbial perspective.
That talent helped him discover the molecular nature of antibiotic resistance; forge new laboratory tools that revolutionized the way scientists think about how microbes cause disease; and train a number of students who have become scientific leaders in infectious diseases. ...
Tuesday, August 26, 2008
Wednesday, August 20, 2008
Weird science news of the week
Gegear et al. studied the ability of fruitflies to detect a magnetic field. a, When trained to associate a magnetic field with a reward of sugar, wild-type flies preferentially choose to enter a tube that is bathed in a magnetic field, rather than one that is not, so long as blue light illuminates the experiment. b, The trained flies demonstrate no preference for the tubes if blue light is filtered out of the illumination. c, Genetically modified flies that lack the photoreceptor cryptochrome (which responds to blue light) do not recognize the magnetic field, even in the presence of blue light, showing that cryptochrome is essential for magnetoreception in fruitflies.
From Nature.
July 28, 2008
OLATHE, KAN. -- When Sean Tevis decided to run for a seat in the Kansas Legislature, he faced a serious problem: money. Local political advisors warned the campaign novice that he would need a war chest of at least $26,000 to compete against his entrenched Republican rival.
It seemed like a fortune to the 39-year-old Democrat. Everyone he knew here was either on a fixed income, worried about losing a job or fretting that the nation's stumbling economy could spread to this southwestern suburb of Kansas City, Kan.
In one panel, a stick-figure Tevis greets a constituent by rattling off a stream of personal facts he's found online about her -- including her birthdate, voting pattern, divorce, paycheck, credit card balances and medical history -- to illustrate his interest in protecting individual privacy.
When she slams the door in his face, the cartoon Tevis muses, "Maybe I should rethink my approach."
In fact, before he created the comic strip, Tevis spent weeks asking cash-strapped friends and family for help and walking door-to-door in the district. He raised $1,525.
The comic strip -- at www.seantevis.com/3000 -- was first posted online July 16. Today, when he files his campaign finance forms with the Kansas secretary of state's office, Tevis will report that he has raised $95,162.76 in donations through PayPal, the online service that allows payments and money transfers via the Internet.
http://scienceblogs.com/bioephemera/2008/08/electing_geeks.php
http://www.latimes.com/news/nationworld/nation/la-na-candidate28-2008jul28,0,4489963.story?page=1
http://www.actblue.com/page/electgeeks
http://www.donengel.com/
http://seantevis.com/kansas/3000/running-for-office-xkcd-style/
Tuesday, July 1, 2008
Friday, June 27, 2008
550 million years of chordate evolution
With the aim of understanding the evolution of chordates, the JGI sequenced the amphioxus genome .... A thorough analysis ... shows that the creature's 19 chromosomes map onto the human genome in 17 segments, each of which is represented four times in the human genome.
"The human genome is a mosaic of these 17 ancestral pieces constructed by two rounds of duplication, followed by gene loss and chromosome rearrangments and fusions. That took some computational gymnastics to sort out, but the evidence is still there," said Rokhsar.
Tuesday, June 17, 2008
Interesting Illusions
They each show something cool about our perception.
"Filling in the Afterimage after the Image" (I could not get Blogger to accept the link to the animation; get it from the contest page) shows that (in my interpretation) the retina sees the 8-pointed figure as a superposition of two uniformly colored 4-pointed stars, and produces the corresponding afterimages.
"Dramatically Different Percepts between Foveal and Peripheral Vision" tells it all. (Again, link to animation from the contest page).
Friday, May 30, 2008
Birth of a supernova
(from Gemini Observatory)
Check out the link: Something that happened 90 million years ago playing out in a matter of days.
Wednesday, May 21, 2008
Monday, May 19, 2008
Tuesday, May 13, 2008
Thursday, May 8, 2008
Thursday, May 1, 2008
Tuesday, April 22, 2008
Want to Remember Everything You'll Ever Learn? Surrender to This Algorithm
SuperMemo is based on the insight that there is an ideal moment to practice what you've learned. Practice too soon and you waste your time. Practice too late and you've forgotten the material and have to relearn it. The right time to practice is just at the moment you're about to forget. Unfortunately, this moment is different for every person and each bit of information. Imagine a pile of thousands of flash cards. Somewhere in this pile are the ones you should be practicing right now. Which are they?
Fortunately, human forgetting follows a pattern. We forget exponentially. A graph of our likelihood of getting the correct answer on a quiz sweeps quickly downward over time and then levels off. This pattern has long been known to cognitive psychology, but it has been difficult to put to practical use. It's too complex for us to employ with our naked brains.
Tuesday, April 8, 2008
And Behind Door No. 1, a Fatal Flaw (Cognitive Dissonance & Monty Hall)
The Monty Hall Problem has struck again, and this time it’s not merely embarrassing mathematicians. If the calculations of a Yale economist are correct, there’s a sneaky logical fallacy in some of the most famous experiments in psychology.
The economist, M. Keith Chen, has challenged research into cognitive dissonance, including the 1956 experiment that first identified a remarkable ability of people to rationalize their choices. Dr. Chen says that choice rationalization could still turn out to be a real phenomenon, but he maintains that there’s a fatal flaw in the classic 1956 experiment and hundreds of similar ones. He says researchers have fallen for a version of what mathematicians call the Monty Hall Problem, in honor of the host of the old television show, “Let’s Make a Deal.”
(more)
Saturday, April 5, 2008
Friday, April 4, 2008
"Jaws II"
Moray Eels have a second set of pharyngeal jaws (you can just see them in this still) that reach into the mouth cavity and pull food into the throat. Watch it happen on a Nature streaming video.
Friday, March 28, 2008
Synchronizing Fireflies
I was always fascinated by the emergence of patterns. One I like most is the synchronization of hundreds or thousands of fireflies. First they flash randomly but after some time and influencing each other, they flash in sync.
The rule behind this is very simple. All fireflies have nearly the same frequency for their flashing, but their phase is shifted. If a firefly receives a flash of a neighbour firefly, it flashes slightly earlier.
This circuit simulates fireflies with small microcontrollers.
A single Firefly
The board consists of 25 fireflies. Every single firefly is self contained, there is no over-all controller. A single firefly consists of:
- ATtiny13 microcontroller, 1k SRAM, 64 bytes RAM
- Light Dependant Resistor (LDR)
- LED
- 2 resistors
The circuit is the same as for the Programmable LED.
The complete Board
Assembling 25 fireflies on a prototype board is easy. Harder is to get the right distance between all fireflies. It has to be close enough to let one firefly influence another, but not the whole group.
The LEDs I used emit the light mostly straight up. So a kind of reflector is needed. I used a piece of paper which is located 5 mm above the LEDs. For the next version I would take LEDs with a wider light emitting angle and use a kind of diffuser, as proposed by Tod for his Smart LED Prototypes.
Here is a video. It is a bit dark as my camera is not very suitable for this.
- Synchronizing Fireflies on Instructables. That is a more detailed step-by-step instruction with more pictures, sourcecode, etc.
- More on the algorithm can be found here:
Firefly Synchronization Ad Hoc Networks
Thursday, March 27, 2008
Ikea Lamps and DIY Platonic Solids.
Make Magazine shows "[i]n this Instructable, the builder combines a bunch of $5 Ikea "Lampans" into larger spherical, Platonic-y lamps."
The "Instructable" in question (pdf) "... shows you how to build large spherical lamps out of Ikea lampan lamps ( $4.99 each ). The lamps are based on platonic solids. With this method I have built large spheres up to 32 lamps.
In the PDF below i included three templates: for the six, twelve and 32 lamp versions. These are all generated from a python script in the Maya software. I calculated that the largest sphere that could be build has about 120 lamps and i would love to build that one; but it will be heavy and bright and probably needs some serious thinking on the structural integrity."
Thursday, March 20, 2008
New Species Photo Roundup
from Cryptomundo, via Boingboing
During the first couple weeks of March, several new species have been revealed as new discoveries. Here is a survey of their published images and links to more details about the findings.
The green tree skink (Prasinohaema virens) is one of five described species of green-blooded lizards from New Guinea. Credit: Chris Austin, Louisiana State University.
A new species of frog of the genus Hylophorbus from New Guinea. Credit: Chris Austin, Louisiana State University.
New species of catfish, Eutropiichthys britzi, is 166mm in length and is named after Museum scientist Ralf Britz. The fish comes from Myanmar in Southeast Asia. Credit: T. Britt Griswold/National Museum of Natural History, Smithsonian Institution.
Source: “Catfish named after Museum scientist”
Two field scientists from the University of Indonesia have found a new bird species, Zosterops Somadikartai or Togian white-eye, in the Togian Islands, Gulf of Tomini, Central Sulawesi province.
Photograph courtesy Mochamad Indrawan.
Sources: “New bird species found in Indonesia”; “New Bird Found in Indonesia”
Images of the floral banded wobbegong (top) and Dwarf spotted wobbegong. Courtesy of DoF.
Source: “Two shark species discovered”
A bird species not seen for 80 years has been rediscovered near Papua New Guinea. The Beck’s petrel (Pseudobulweria becki), long thought to be extinct, was photographed last summer by an Israeli ornithologist in the Bismarck Archipelago, a group of islands northeast of New Guinea.
Source: “Bird unseen for 80 years found”
And how about a dramatic 5th anniversary discovery’s photograph?
A new species of jellyfish, Big Red, Tiburonia granrojo, was discovered in 2003 by researchers from MBARI and from the Japanese Marine Science and Technology Center. This amazing jelly gets up to 1 meter in diameter and is found throughout the Pacific Ocean.
Source: “New Jellyfish Species Found”
Wednesday, March 19, 2008
ANTS HAVE ALGORITHMS: A Talk with Iain Couzin
From 3QuarksDaily:
Ants have algorithms. If you think about an ant colony, it's a computing device; there's some wonderful work by Jean-Louis Deneubourg in Brussels and his collaborators that really started this field in a way with Ilya Prigogine and later on Jean Louis Deneubourg looking at the ways in which social insect colonies can interact. One example would be—it sounds trivial, but if you think about it, it is quite difficult—how can a colony decide between two food sources, one of which is slightly closer than the other? Do they have to measure this? Do they have to perform these computations?
We now know that this is not the case. Chris Langton and other researchers have also investigated these properties, whereby individuals just by virtue of the fact that one food source is closer, even if they are searching more or less at random, have a higher probability of returning to the nest more quickly. Which means they lay more chemical trail, which the other ants tend to follow. You have this competition between these sources. You have an interaction between positive feedback, which is the amplification of information—that's the trail-laying behavior—and then you have negative feedback because of course if you just have positive feedback, there is no regulation, there is no homeostasis, you can't create these accurate decisions.
There's a negative feedback, which in this case is the decay of the pheromone, or the limited number of ants within the colony that you can recruit, and this delicate balance of positive and negative feedback allows the colony to collectively decide which source is closest and exploit that source, even though none of these individuals themselves have that knowledge.
More here.
Friday, March 14, 2008
What makes Mathematics so hard to learn?
In a recent essay, Artificial Intelligence guru Marvin Minsky explores problems in mathematics education. Minsky’s first distinction is between Arithmetic and Mathematics — grade schools emphasize the former, leaving grander concepts of Mathematics for later education. Minsky points out that if students are bored by Arithmetic, they may be turned off by math in general (that was certainly the case for me!).
Here’s a bit from Minsky’s essay:
Why do some children find Math hard to learn? I suspect that this is often caused by starting with the practice and drill of a bunch of skills called Arithmetic—and instead of promoting inventiveness, we focus on preventing mistakes. I suspect that this negative emphasis leads many children not only to dislike Arithmetic, but also later to become averse to everything else that smells of technology. It might even lead to a long-term distaste for the use of symbolic representations.
…
Anecdote: I asked a younger child “how much is 15 and 15″ and she quickly answered, “I think it’s 30.” I asked how she figured that out so fast and she replied, “Well, everyone knows that 16 and 16 is 32, and then I subtracted the extra 1’s.”
Traditional teacher: “Your answer is right but your method was wrong: you should add the two 5’s to make a 10; then write down a 0 and carry a 1, and then add it to the other two 1’s.” The traditional emphasis on accuracy leads to weakness of ability to make order-of-magnitude estimates—whereas this particular child already knew and could use enough powers of 2 to make approximations that rivaled some adult’s abilities. Why should children learn only “fixed-point” arithmetic, when “floating point” thinking is usually better for problems of everyday life! More generally, we need to find out more about how each child regards each subject. How might it answer questions like “What am I doing here, and why? “What can I expect to happen next?” “Where and when am I likely to use this?
What do you think? How did your Mathematics education affect you — do you love or hate math? How would you have changed your Mathematics education? Share your experience in the comments! Also check out the whole essay, and AI fans will dig Wikipedia’s page on Minsky himself.
via MentalFloss
Song-Learning Birds Shed Light on Our Ability to Speak
From 3Quarksdaily
A new study may have been for (and about) the birds, but it also hints at how humans may have developed the ability to speak, potentially paving the way to one day to identifying the causes of speech deficiencies. Duke University scientists report in PLoS ONE this week that they attempted to pinpoint regions of the brain responsible for vocal skills by studying three types of birds (parrots, hummingbirds, and songbirds) capable of picking up new songs and utterances as well as birds (zebra finches and ringed turtle doves) that lack the ability. Their findings: vocal pathways are always nestled in the same areas of the brain that control body movement.
“The vocal learning system is embedded within [an] ancient pathway'“ designed to handle motor function that, in birds, controls their wings and legs, says study co-author Erich Jarvis, an associate professor of neurobiology at Duke University. So how did some birds develop an ability to learn new sounds? Jarvis speculates that the ability evolved from motor function or, more specifically, that the original “wiring“ in the pathway linked to limbs may have duplicated and connected to vocal organs in these birds. He believes that human language pathways may have developed in a similar fashion, given that our ability to speak is based on controlling movements in the larynx (voice box).
More here.
Tuesday, March 11, 2008
Curious property of Prince Rupert's Drop glass
If you drop molten glass into a bucket of water, it will solidify into what's called a "Prince Rupert's Drop." According to this Corning video, the surface of the drop is in a state of great compression, while the interior is in a state of great tension. You can squeeze the bulbous part of the drop with pliers or bang on it with a hammer to no avail. However, if you snap off the hair-thin tail at the end of the drop, it'll shatter into dust. (Via boingboing)
Powerbocking Sifakas
Deja Vu Video From: Yesbutnobutyes
Posted by Miss Cellania on March 10, 2008.
I’ve seen videos of powerbocking for some time now, and they reminded me of something else. Yeah, they remind me of the stilts my dad made for me crossed with the pogo stick I got for Christmas when I was eight. But that’s not it. Powerbocks are spring-loaded stilts that attach to each foot. Something that Wile E. Coyote might order from ACME back in the day, but they are available from several sources now. No, that’s not what I was reminded of, either.
Oh, wait, now I know....
For best results, play both at once. The music from the first makes the second one better.
Wednesday, March 5, 2008
Learning to talk changes how we perceive color
A new British study suggests that our perception of color changes when we acquire language (and the ability to linguistically categorize colors):
"As an adult, color categorization is influenced by linguistic categories. It differs as the language differs," said Kay, who is renowned for his studies on the ways that different cultures classify colors. He cited recent research on the ability of Russian speakers to detect shades of blue [pdf] that English speakers classify as a single color.
How does the switch to a language-bound perception of color take place?
"That's the $64,000 question," said Kay. "We have every reason to believe that learning a language has a lot to do with it -- but [as for] how that works, it's early."
Link (via Kottke) (via Boing Boing)
Thursday, February 28, 2008
Dance Your Ph.D.
No one quite knew what to expect as the lights came up on a pair of astrophysicists dressed as binary galaxies. To the tune of an old tango, Ruth Gruetzbauch stalked and twirled around Jesús Varela before surrendering to his supermassive gravity. The rowdy audience of scientists exploded with applause. The world's first Dance Your Ph.D. Contest, with Christoph Campregher at the controls of the sound system, was off to a good start.
(via Science & The Telegraph)
pi10k
pi10k converts the first 10,000 numbers in pi to musical notes. You determine which notes correspond to each integer.
(link via boingboing)
Monday, February 18, 2008
Wednesday, February 13, 2008
floccus
I don't know what this is, but I love it. Check out the others at the flong site too.
http://www.flong.com/storage/experience/floccus/
Monday, February 11, 2008
Resurrecting Destroyed Music Recording Earns Mathematician a Grammy
(From Gizmodo.com)
By finding rhythmic sounds buried in the recording, and using mathematician Dr. Kevin Short's signal processing algorithms, the team carefully pieced together the tracks, interpolating holes and correcting for distortions and speed-shifts. The resulting album, The Live Wire, was nominated for the Best Historical Album category in the Grammys.
The story at Sciencenews:
"The wire was really flimsy," says Jamie Howarth, a sound engineer on the job. "It was frustratingly, maddeningly fragile." It snapped over and over, and with every snap, a moment of the recording was lost. And when it didn't snap, it kinked and snarled.
After a 36-hour session, Guthrie and the engineers listened to the recording they produced. The pitch rose and fell independent of Guthrie's singing. They could hear him telling long stories, but only every few words were intelligible. The wire had stretched in places, slowing the recording down. The kinks produced moments of silence.
"Old analog tapes often were distorted by the mechanical effects of the recording instrument. The sprockets and gears that rotated the spools could cause warps and warbles in the sound, unlike the precision of modern digital recording equipment.
“I had been working on the mathematics of compression techniques and did lots of analysis of audio to figure out what’s going on in this music,” said Short.
His papers at scientific conferences caught the attention of Jamie Howarth, founder of Plangent Processes of Nantucket, Mass. Plangent’s patented Clarity Audio Restoration technology uses a software algorithm to correct the speed and musical pitch distortions in analog recordings."
Friday, February 8, 2008
Crab Spider eats Gecko
"So I moved a sawhorse in my shed and a medium large Gecko lizard went scurrying toward the corner of the shed. It's not unusual to see lizards and geckos in my yard. Geckos are very fast and I have never been able to take a picture of one. But this Gecko stopped behind a lawn chair so being curious I pulled the chair back to revel the Gecko on it's back tail wiggling like a worm. Thats odd I thought so I looked closer and there to my amazement was the Largest Wolf spider I have ever seen. It caught the Gecko while it was running and had a firm grasp of it's neck. At first I was startled but my next thought was Where is my camera? I got the camera and in that time the spider had moved up the wall with the gecko in it's mouth. ... I grabed the tape measure for a size reference I didn't get too close with it I didn't want to scare the spider off. The tape is a couple inches closer to the camera than the spider but it's close enough to be a good measure of the spider. "
MattBatt
Courtesy of www.whatsthatbug.com
(My new favorite website ever)
Thursday, February 7, 2008
10 Trailblazing Scientists About to Change Your Future
1. Erich Jarvis, Neurobiologist
When Duke professor Erich Jarvis wanted to find the key to human communication, he turned to birds. Strange, but true. Jarvis has been studying songbirds’ brains for insight into human linguistics, and his research has led to a startling discovery: Birds use two distinct neural pathways to learn songs—one in the front of the brain and one in the back. Guess what? Humans learn to speak in the same way. Jarvis believes this is an evolutionary clue suggesting that, when we shared an ancestor 300 million years ago, our brains were hardwired for language. Theoretically, once Jarvis and other neuroscientists fully understand this genetic blueprint, they can alter it and, in the process, make it easier to learn new languages and possibly even repair brain damage.
2. Nathan Wolfe, Epidemiologist
Instead of spending his days in a lab, UCLA professor Nathan Wolfe has thrown himself into the heart of the jungle. Trekking right along with hunters in Cameroon, he’s attempting to learn how they’re exposed to diseases by asking them to donate blood samples (their own and their prey’s). Wolfe’s method is difficult, but his idea is simple: HIV, Ebola, and other human viruses originated from human-animal contact, so it’s possible that these hunters—who come in close contact with their catch—are the ones inadvertently triggering the outbreaks. Wolfe’s work will go a long way toward predicting where emerging diseases could occur and stopping the next HIV or Ebola epidemic before it starts.
3. Emily Oster, Economist
A few years ago, as an economics PhD student at Harvard, Emily Oster chose to focus her attention on the AIDS epidemic in Africa. Traditionally, that was the turf of sociologists, anthropologists, and public health officials. But the 26-year-old Oster wasn’t afraid to hop the scientific fence and join the other side. She also hasn’t been afraid to suggest things we haven’t heard before—namely, that treating herpes and other STDs (instead of AIDS) can significantly reduce HIV transmissions. Oster also believes that while the HIV numbers commonly used by the UN, popular press, and researchers are about three times too high, the disease is spreading faster than ever in Africa. By casting her economist’s eyes on the issue, Oster has forced the old turf-guarders to reevaluate their approaches to AIDS in Africa and come up with new solutions.
4. Hiroshi Ishiguro, Roboticist
Most robots look like, well, robots, but Ishiguro’s robots look remarkably human. To many people, this is discomforting—creepy even. To Ishiguro, it’s essential. As director of Osaka University’s Intelligent Robotics Lab, Ishiguro believes robots’ main role in our future will be to interact naturally with people—to pitch in as the workforce shrinks or to do necessary, unpleasant tasks. And because Ishiguro contends that people respond better to his humanlike robots (aka, androids) than other machine-like ones, he’s taken a no-holds-barred approach to studying cognitive behavior and human activity. In addition to nearly perfecting his silicone molds and metal skeletons, he’s figured out how to mimic even the most minute human movements, such as breathing, blinking, and even fidgeting. The result is “android science.” The idea is that by using robots that are indistinguishable from humans in scientific experiments, researchers can still elicit natural responses from their subjects but also have more control over the environment. So far, Ishiguro has already learned plenty about his students using the Geminoid HI-1, an android version of himself, which he operates via remote control to teach class.
5. Jeffrey H. Schwartz, Forensic Anthropologist
Jeffrey Schwartz became the first modern man to lay eyes on a young George Washington. Yes, that George Washington. Although he normally works on forensic cases reconstructing faces from bones, Schwartz re-created Washington by working from the outside in. Using only clues from statues, portraits, dentures, and clothing, Schwartz plugged his “evidence” into a three-dimensional computer program, which allowed him to combine and manipulate the clues to arrive at his reproduction. Schwartz created renderings of the founding father at ages 19, 45, and 57, and from the looks of it, George Washington might have been the George Clooney of his day. The lasting ramifications of Schwartz’s applications and research will be seen almost immediately, as other forensic anthropologists follow his method to see what distant past heroes (and villains) really looked like.
6. Pardis Sabeti, Biological Anthropologist
Pulling a typical all-nighter in med school, Pardis Sabeti achieved a not-so-typical feat—she confirmed the effects of genetics on the evolution of human diseases. By inputting different DNA sequences into an algorithm she created, Sabeti was able to find genes still linked to their neighbors—suggesting that their success within the gene pool is due to natural selection, not pure chance.
Sabeti now plans on using her algorithm to deconstruct the malaria parasite. By seeing how the parasite has evolved to develop drug resistances, she hopes to detect genetic vulnerabilities in malaria’s makeup. If she’s successful, future cures will be designed to attack those weaknesses. Meanwhile, Sabeti isn’t your typical lab rat. She’s the lead singer of the alt-rock band Thousand Days and sounds more than a little like Liz Phair. And did we mention that she’s a Rhodes Scholar who just graduated summa cum laude from Harvard Medical School in 2006?
7. Thomas A. Jackson, Aerospace Engineer
Piloting a real-life Luke Skywalker X-wing fighter is every aeronautical engineer’s fantasy, and Thomas Jackson is helping make it a reality. A scientist for the U.S. Air Force Research Laboratory, Jackson is setting the direction for the supersonic combustion ramjet—aka, the scramjet. By scooping up oxygen from the atmosphere as it ascends, the scramjet eliminates the need for the heavy liquid oxygen and solid oxidizer used by a typical space shuttle. And once it catches on, it will revolutionize air travel. How does a 2-hour flight from New York to Sydney sound? Or a layover on the Moon? And the best thing is, it’ll all happen sooner than you think. In April 2007, NASA successfully test-powered a hydrocarbon-fueled scramjet engine to Mach 5.
8. , Probabilistic Roboticist
Sebastian Thrun is a Stanford professor who drives a Volkswagen—but not just any Volkswagen. Thrun’s Touareg is autonomous, and its name is Stanley. The VW drives itself thanks to state-of-the-art road-finding and obstacle-avoidance software, along with radar systems, video screens, and laser range finders. Like every driver, Stanley makes mistakes, and Thrun programmed him with that in mind. Stanley’s decisions are based not on absolutes, but on probabilities, which results in more natural and realistic driver reactions. But Thrun isn’t so sure people will immediately hand over the keys to a bunch of Stanleys. It may take up to 30 years, he says, “simply because we don’t know how to insure a car where no one is at the wheel.”
9. Nima Arkani-Hamed, Particle Physicist and Applied String Theorist
Nima Arkani-Hamed thinks big. He has a theory that our universe is one of an infinite number of universes—meaning the largest thing we can wrap our minds around is actually pretty tiny. He didn’t pull the “multiverse” out of thin air, though. After becoming a Harvard professor at age 30, Arkani-Hamed first made a name for himself by suggesting that our universe is five-dimensional. Then he moved on to the multiverse, theorizing that our own universe has a hidden feature called “split supersymmetry,” which means that half of all particles have partner particles. The theory will be tested soon in Switzerland’s brand-new Large Hadron Collider (LHC), and if the LHC finds Arkani-Hamed’s partner particles, it could prove that the multiverse is real—and that our place in it is that much smaller.
10. Margaret Turnbull, Astrobiologist
Hunting for aliens isn’t necessarily the most respected academic endeavor in the world, but Margaret Turnbull pursued it anyway. More precisely, she set out to catalog the stars most likely to develop intelligent alien civilizations. Turnbull’s system was painstakingly tedious. She started with the 120,000 cataloged stars, narrowed down her list to 17,129 (excluding the ones that were too hot, too close together, or too erratic), and then parsed that list down to 100 candidates. Her final criteria? An ideal star would be at least 3 billion years old and have a high iron content (the better to spin off life-yielding planets with).
Turnbull’s mind-blowing patience has paid off. In 2015, NASA will be launching its Terrestrial Planet Finder, which will use space telescopes to look for planets beyond our solar system, and it’ll start with the stars on Turnbull’s short list. In other words, nobody’s laughing at Turnbull’s search for aliens now.
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- Synchronizing Fireflies (via MAKE magazin...
- Ikea Lamps and DIY Platonic Solids.
- New Species Photo Roundup
- ANTS HAVE ALGORITHMS: A Talk with Iain Couzin
- What makes Mathematics so hard to learn?
- Song-Learning Birds Shed Light on Our Ability to S...
- Curious property of Prince Rupert's Drop glass
- Powerbocking Sifakas
- Learning to talk changes how we perceive color
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