Science is awesome. Artist Puts a Human Face on DNA | Genetics & Gene Sequencing. When Heather Dewey-Hagborg walks down the street, she notices all the bits of genetic information left behind by other unsuspecting pedestrians — everything from strands of hair to fingernails to discarded cigarette butts. For an artist and doctoral student, these objects were a chance to investigate a compelling question: How much can be learned about a person from a stray hair? "The question really stuck in my head, and I became obsessed with trying to get an answer," Dewey-Hagborg, who studies electronic art at Rensselaer Polytechnic Institute in Troy, N.Y., told LiveScience. "The more I walked around the city, the more I saw these genetic artifacts everywhere I looked. " She started collecting samples: A wad of chewing gum outside a grocery store, strands of hair from Penn Station in Manhattan, and cigarette butts along two major thoroughfares in Brooklyn.
"I have a list of about 50 different traits that relate to physical appearance that I'm interested in," Dewey-Hagborg said. Hair Dryer. Mountain Populations Offer Clues to Human Evolution. Photo In the hearts of evolutionary biologists, mountains occupy a special place. It’s not just their physical majesty: mountains also have an unmatched power to drive human evolution. Starting tens of thousands of years ago, people moved to high altitudes, and there they experienced natural selection that has reworked their biology. “This is the most extreme example in humans that you can find,” said Rasmus Nielsen, an evolutionary biologist at the University of California at Berkeley. Humans have adapted to mountainous environments just as Charles Darwin predicted. To discover how this occurred, scientists are now examining the DNA of people who scaled mountains in different parts of the world.
“There’s this beautiful experiment in natural selection going on,” says Anna Di Rienzo, a professor of human genetics at the University of Chicago. When people from low elevations climb to higher ones, they start struggling for oxygen. In the face of this stress, people respond in several ways. Fun Video: Pink Light Doesn't Exist. The laws list: K. Brief Answers to Cosmic Questions. Structure of the Universe Does the Universe have an edge, beyond which there is nothing? Are the galaxies arranged on the surface of a sphere? Why can't we see the whole universe? Does the term "universe" refer to space, or to the matter in it, or to both? Evolution of the Universe Did the Universe expand from a point? If so, doesn't the universe have to have an edge? More about the Big Bang When they say "the universe is expanding," what exactly is expanding? Structure of the Universe Does the Universe have an edge, beyond which there is nothing?
Are the galaxies arranged on the surface of a sphere? Why can't we see the whole universe? If you could suddenly freeze time everywhere in the universe, and magically survey all of creation, you would find galaxies extending out far beyond what we can see today. Does the term "universe" refer to space, or to the matter in it, or to both? Today, the situation is reversed. Evolution of the Universe Did the Universe expand from a point? Epigenetics_primer.jpg (JPEG Image, 1980 × 1223 pixels) Dynamic Periodic Table.
Electromagnetic theories of consciousness. The electromagnetic theories of consciousness propose that consciousness can be understood as an electromagnetic phenomenon. Overview[edit] Theorists differ in how they relate consciousness to electromagnetism. Electromagnetic field theories (or "EM field theories") of consciousness propose that consciousness results when a brain produces an electromagnetic field with specific characteristics. Susan Pockett[1] [2]and Johnjoe McFadden[3][4][5] have proposed EM field theories; William Uttal[6] has criticized McFadden's and other field theories.
Some electromagnetic theories are also quantum mind theories of consciousness; examples include quantum brain dynamics (QBD) approaches of Mari Jibu and Kunio Yasue[7] and of Giuseppe Vitiello.[8] In general, however, quantum mind theories other than these QBD approaches do not treat consciousness as an electromagnetic phenomenon. Also related are E. Cemi theory[edit] McFadden thinks that the EM field could influence the brain in a number of ways. Science Space Photo of the Day | Wired Science. When the lamp is shattered, The light in the dust lies dead. When the cloud is scattered, The rainbow's glory is shed. These words, which open Shelley’s poem "When the Lamp is Shattered," employ visions of nature to symbolize life in decay and rebirth.
It's as if he had somehow foreseen the creation of this new Gemini Legacy image, and penned a caption for it. What Gemini has captured is nothing short of poetry in motion: the colorful and dramatic tale of a life-and-death struggle between two galaxies interacting. Polar-ring galaxies are peculiar objects. Models of how polar-ring galaxies form offer two general formation scenarios: 1) a piercing merger between two galaxies aligned roughly at right angles, or 2) when the host galaxy tidally strips material from a passing gas-rich spiral and strews it into a ring.
Born of Violence NGC 660’s polar ring resolves into hundreds of objects, a considerable part of which are blue and red supergiant stars. Weighing the Evidence Life from Death? The Aviator: Science Fiction of the Post Global Warming World. How can you go wrong with blimps? The Aviator is a new book that gives you a world of post-global warming climate and interesting developments in transportation technology and artificial intelligence.
It is written by New Zealand based writer Gareth Renowden. The Aviator explores a post-apocalypse world where the apocalypse is not nuclear war or a large object hitting the earth, or even an outbreak of zombi-ism, but rather, unfettered human-caused climate change. The truth is, a future Earth with continued climate change could end up in a number of different states, but the planet ala The Aviator is a reasonable approximation of a switched-over climate, brought to us by someone who knows the science well. I have truly enjoyed it. The book’s web site is here. Physics Flash Animations. We have been increasingly using Flash animations for illustrating Physics content.
This page provides access to those animations which may be of general interest. The animations will appear in a separate window. The animations are sorted by category, and the file size of each animation is included in the listing. Also included is the minimum version of the Flash player that is required; the player is available free from The categories are: In addition, I have prepared a small tutorial in using Flash to do Physics animations. It contains screen shots and embedded Flash animations, so the file size is a 173k. LInks to versions of these animations in other languages, other links, and license information appear towards the bottom of this page. The Animations There are 99 animations listed below. Other Languages and Links These animations have been translated into Catalan, Spanish and Basque: Educational Technology blog from the Univ. of Illiinois. Accelerating Human Evolution. Your Brain on Pot: Watch a handy, 2-minute explanation from ASAP Science. (VIDEO)
One of my favorite YouTube accounts is AsapSCIENCE, a video series created by Mitchell Moffit and Gregrory Brown and devoted to explaining everyday phenomena in about two minutes—with plenty of visual aides. Their latest installment, “Your Brain on Drugs: Marijuana,” is another gem. If you don’t quite understand how or why marijuana has the effect it does on the human mind, it provides a quick, comprehensible explanation that doesn’t stint on the science. Ordinarily, the video explains, the neurons in your brain “temporarily become unresponsive after firing, to prevent them from overreacting” to stimuli. Cannabinoids “interrupt this approach,” however, and, as a result, each train of thought “becomes the most significant and profound thing ever.” Cannabinoids also affect the amount of dopamine and norepinephrine in your brain, which can lead to feelings of euphoria, but also anxiety. Sounds about right. Science Documentary Films.
Home : Scientific Reports. Search" BSA Image Collection. General Biology Video Lecture Course. Geologic Time: Graphical Representation of Geologic Time. Free Medical Books | by Amedeo.com. 15 Current Technologies My Newborn Son Won't Use. I was surprised when a 23-year-old co-worker told me she didn't remember a time before broadband Internet. At some point, her parents must have had dial-up, but she was so young that she doesn't even remember back that far. Wireless broadband won't dominate the home market until he's 8 to 10, but my son won't remember a world where consumers pay for wired Internet connections. Even today, 4G LTE provides comparable download speeds and better upload speeds than cable Internet, but the cost of using mobile broadband all the time is prohibitive. At some point in the next few years, broadband providers are going to realize that giving everyone home antennas is more scalable than wiring and maintaining each street's network of fiber-optic cables.
At that point, the paradigm will shift and it will be cheaper to purchase wireless than wired Internet. Clear already offers a 4G WiMax home Internet hub with unlimited service, though it's not fast enough to compete with cable Internet. Delivery of subunit influenza vaccine to skin with microneedles improves immunogenicity and long-lived protection : Scientific Reports. Microneedle fabrication and coating As previously described25, metal microneedles were fabricated by etching stainless steel sheets (McMaster-Carr, Atlanta, GA). Each microneedle measured 700 µm tall, with a cross sectional area of 170 µm by 55 µm at the base and tapering to a sharp tip, with five microneedles per row. Microneedles were dip-coated using a coating solution formulated with 1% (w/v) carboxymethylcellulose (Carbo-Mer, San Diego, CA), 0.5% (w/v) Lutrol F-68NF (BASF, Mt.
Olive, NJ), 15% (w/v) D-(+)-trehalose dihydrate (Sigma, St. Louis, MO) and H1N1 A/Brisbane/59/2007 subunit vaccine solution. The vaccine was kindly provided by Novartis Vaccines and Diagnostics (Cambridge, MA). Cells and viruses Madin-Darby canine kidney (MDCK) cells (ATCC CCL 34, American Type Culture Collection, Manassas, VA) were maintained in Dulbecco's Modified Eagle's Medium (DMEM) (Mediatech, Herndon, VA) containing 10% fetal bovine serum (Hyclone, ThermoFisher Scientific, Rockford, IL). Statistics. Top Ten Infrared Space Pictures. Image courtesy J. Hora, HSCfA, W.
Latter, Herschel, and Caltech/NASA NASA launched Spitzer on August 25, 2003, to peer inside thick dust clouds, obscured galactic cores, and other hidden regions of the cosmos. These unique abilities are thanks to its three instruments that record infrared light, a wavelength invisible to the human eye. (See "Birth of an Earthlike Planet Spied By Spitzer. " ) When Spitzer was launched, the space agency gave their $2.2-billion device a life span of five years. Even after the last coolant had boiled away on May 15, 2009, however, one camera was left functioning: the Infrared Array Camera, whose team selected the ten images shown here.
"The infrared light [in the nebula] is essentially heat coming from warm dust and gas," said Joseph Hora of Harvard University, a member of the Spitzer team. "The benefit is you can see through normally dark clouds of gas. Runner's High Hardwired in People—And Dogs. People are wired to run, according to a new study that looked at the roots of the pleasurable sensation known as runner's high. Experienced during moderate to intense aerobic exercise, runner's high occurs when natural chemicals called endocannabinoids activate the part of the brain associated with "feeling good," said study co-author Greg Gerdeman. "Endocannabinoids are molecules that are often referred to as the body's own marijuana-like substances, because they activate similar cellular receptors," said Gerdeman, a biologist at Eckerd College in St. Petersburg, Florida. To test if running—and its feel-good effect—is hardwired in more active animals, Gerdeman and colleagues set up an experiment with two species of natural athletes, humans and dogs, and one species that doesn't run, the ferret.
(See National Geographic Adventure's running guide.) The team, led by the University of Arizona's David Raichlen, recruited ten humans to run and walk on a treadmill. People Evolved to Be Athletes. How to Read Body Language to Reveal the Underlying Truth in Almost Any Situation.
Science & Nature - Human Body and Mind - Mind. Visually Channel | Stumbleupon.com. 100 - The Mapping of Humanity's Family Tree. MIT researchers produce miracle LED: puts out twice as much power as it takes in.