Body Language. Free E-Books. Mapping America — Census Bureau 2005-9 American Community Survey. The 20 most-watched TED Talks to date. TEDTalks The 20 most-watched TEDTalks (so far) Today, on the fifth birthday of TEDTalks video, we’re releasing a new list of the 20 most-watched TEDTalks over the past five years — as watched on all the platforms we track: TED.com, YouTube, iTunes, embed and download, Hulu and more … What a great, mixed-up group this is!
Talks about education and creativity, sex […] Playlist The 20 most popular TED Talks, as of December 2013 UPDATED: To see all these talks at one click, check out our updated Playlist: The 20 Most Popular Talks of All Time. Mathtools.net - Link Exchange for the Technical Computing Community. The Basics of MRI. Western Philosophy. - StumbleUpon. The brain’s silent majority - 2009 FALL. When you have no clue, call it glue. “Glia,” the Greek word for glue, was the name the pathologist Rudolph Virchow gave, back in 1856, to the gelatinous substance that forms the bulk of the brain. And it stuck. These days, scientists use it to denote the matter that accounts for 90 percent of the brain’s cells and more than half its volume — but, like the late comic Rodney Dangerfield, “can’t get no respect.”
Neurons, the “talented tenth” of the human brain that hog the lion’s share of brain scientists’ attention, are indeed a work of evolutionary art. They’ve got a knack that glia lack: Their aptitude for high-speed, long-distance communication makes them the nervous system’s premier information processors. Neurons can send electrical impulses whizzing down their long, tubular projections called axons, which hook up to other neurons via junctions called synapses. “When the brain is injured, the neighborhood astrocytes go into a completely altered state.” Arne Hurty Joining the glia club. BRAINMETA.COM - NEUROSCIENCE, CONSCIOUSNESS, BRAIN, MIND, MIND-BRAIN, NEUROINFORMATICS, BRAIN MAPS, BRAIN ATLASES.
Home page. General Biology Video Lecture Course. Biology That Makes Us Tick: Free Stanford Course by Robert Sapolsky. Table of contents. (With last update date) Cover Foreword (August 13, 2009) Part 1. Quantum theory and consciousness Preface to part 1 (April 12, 2000) Chapter 1. The three major metaphysical philosophies (September 27, 2010) 1.1. 1.6. 1.7. Chapter 2. 2.1. 2.2. 2.3. 2.4. 2.5. 2.6.
Chapter 3. 3.1. 3.2. 3.3. 3.4. Chapter 4. 4.1. 4.2. 4.3. 4.4. Chapter 5. 5.1. 5.2. 5.3. 5.4. 5.5. 5.6. 5.7. 5.8. 5.9. 5.10. 5.11. 5.12. 5.13. 5.14. 5.15. 5.16. Chapter 6. 6.1. 6.2. 6.3. 6.4. 6.5. 6.6. 6.7. 6.8. 6.9. 6.10. 6.12. Part 2. Preface to part 2 (October 17, 2010) Chapter 7. 7.1. 7.2. 7.3. 7.4. 7.5. 7.6. 7.7. 7.9. 7.10. Chapter 8. 8.1. 8.2. Chapter 9. 9.1. 9.2. 9.3. 9.4. 9.6. Chapter 10. 10.1. 10.2. 10.3. 10.4. Chapter 11. 11.1. 11.2. 11.3. 11.4. 11.5. 11.6. 11.7.The victim/victimizer polar pair 11.8. 11.9. 11.10.
Chapter 12. 12.1. 12.2. 12.3. 12.5. 12.6. 12.7. Chapter 13. 13.1. 13.2. 13.3. 13.4. 13.5. 13.6. 13.7. 13.8. 13.9. 13.10. 13.11. 13.12. 13.13. Chapter 14. 14.1. 14.2. 14.3. 14.4. 14.5. 14.6. 14.7. 14.8. Chapter 15. The Authentic History Center. Constitution.jpg (JPEG Image, 720x720 pixels) - Scaled (83%) Three New Planets and a Mystery Object Discovered Outside Our Solar System. Click on image for high-resolution file. Three planets -- each orbiting its own giant, dying star -- have been discovered by an international research team led by Alex Wolszczan, an Evan Pugh Professor of Astronomy and Astrophysics at Penn State, using the Hobby-Eberly Telescope.
Penn State is a major partner in the design, construciton, and operation of this telescope, which is one of the largest in the world. In 1992, Wolszczan became the first astronomer ever to discover planets outside our solar system. Credit: Marty Harris/McDonald Obs. /UT-Austin 26 October 2011 — Three planets -- each orbiting its own giant, dying star -- have been discovered by an international research team led by a Penn State University astronomer. The three newly-discovered planetary systems are more evolved than our own solar system. Observations of dying stars, their metal content, and how they affect the planets around them could provide clues about the fate of our own solar system. . [ Katrina Voss ] 1920's Automobiles. The rapidly growing automobile industry led by Henry Ford and the Ford Motor Company produced new and better models every year to supply the insatiable public demand. Increased wages and lower cost vehicles made possible through mass production meant that cars became increasingly affordable, although 3 out of 4 cars were bought on installment plans.
Roads that had been designed for horse transport began to deteriorate under the steadily increasing load of traffic. In 1906 local governments supplied 96 per cent. of the road funding. In 1927 the State governments supplied about 37 per cent., the Federal Government 10 per cent., and the local governments 53 per cent. The funding problem for building and maintaining roads suitable for motor cars was largely solved by the introduction of a tax on gas. The car enabled people to travel much further afield than foot or horse had permitted. Car advertisements became more sophisticated as psychology was employed by copywriters. Vintage Car Clubs. Peak Everything -- Why Everything Costs More. Peak Oil -- No Longer the Right Question A Shell Oil geologist named M. King Hubbert predicted in 1956 that U.S. oil production would peak in the early 1970s. When it did, Hubbert became the geologist equivalent of a rock star and gave the young environmental movement evidence for something it was seeking: a limit to growth.
When is -- or was -- peak world oil production? It's just not the right question anymore. Deepwater drilling, tar sands extraction, and the shale gas boom have extended the supply of hydrocarbon fuels. The new question: What's the smartest way to use them? The iconic Peak Oil example has inspired parlor-game questions about other resources. Peak Uranium -- Nuclear Risk Declines Post-Fukushima "Peak uranium" entered the lexicon with peak oil, coal and natural gas in 1956, when Shell Oil geologist Hubbert sketched out his famous resource bell curves.
The world reached a uranium production peak in the 1980s, even as consumption climbed. [Also see: Top Counterfeit Goods] DNA seen through the eyes of a coder. DNA seen through the eyes of a coder or If you are a hammer, everything looks like a nail This is just some rambling by a computer programmer about DNA. I'm not a molecular geneticist. If you spot the inevitable mistakes, please mail me (bert hubert) at ahu@ds9a.nl.
I'm not trying to force my view unto the DNA - each observation here is quite 'uncramped'. Quick links: The source code, Position Independent Code, Conditional compilation, Epigenetics, Dead code, bloat, comments ('junk dna'), fork() and fork bombs ('tumors'), Mirroring, failover, Cluttered APIs, dependency hell, Viruses, worms, Central Dogma, Binary patching aka 'Gene therapy', Bug Regression, Reed-Solomon codes: 'Forward Error Correction', Holy Code, Framing errors: start and stop bits, Massive multiprocessing: each cell is a universe, Self hosting & bootstrapping, The Makefile, Further reading. Updates 24th of February 2013: Added a bit on epigenetics, updated the font, small updates here and there.
The source code Is here. Arms and Armor—Common Misconceptions and Frequently Asked Questions | Thematic Essay. Parrying dagger (pugnale bolognese), ca. 1550–75 Italian Partly gilt steel, brass, and wood; Wt. 15 oz. (425 g) Gift of Jean Jacques Reubell, in memory of his mother, Julia C. Coster, and of his wife, Adeline E. Post, both of New York City, 1926 (26.145.94) The field of arms and armor is beset with romantic legends, gory myths, and widely held misconceptions.
Their origins usually are to be found in a lack of knowledge of, and experience with, genuine objects and their historical background. Most of them are utter nonsense, devoid of any historical base. Perhaps the most infamous example is the notion that "knights had to be hoisted into their saddles with a crane," which is as absurd as it is persistent even among many historians.
In other instances, certain technical details that escape an obvious explanation have become the focus of lurid and fantastically imaginative attempts to explain their original function. Misconceptions and Related Questions Relating Armor 1. 2. 3. 4. 5. 6. 7. The Power of Oratory in the United States.
About chromasia / c h r o m a s i a. Lincoln and the Civil War | Connections | The Metropolitan Museum of Art. Harold Holzer1280852 Abraham Lincoln | 1863, printed 1901 | Alexander Gardner (American) | Gelatin silver print | Warner Communications Inc. Purchase Fund, 1976 (1976.627.1)8561024 Abraham Lincoln | 1863, printed 1901 | Alexander Gardner (American) | Gelatin silver print | Warner Communications Inc. Purchase Fund, 1976 (1976.627.1)1126820 Life Mask of Abraham Lincoln | 1860, cast 1886 | Leonard Wells Volk (American) and Augustus Saint-Gaudens (American) | Bronze | Purchase, Jonathan L. Cohen and Allison B. Morrow Gift and Friends of the American Wing Fund, 2007 (2007.185.2)8761024 Life Mask of Abraham Lincoln | 1860, cast 1886 | Leonard Wells Volk (American) and Augustus Saint-Gaudens (American) | Bronze | Purchase, Jonathan L.
Harold Holzer1280852 I'm Harold Holzer, I'm the Senior Vice President for External Affairs at the Met, and I also write books about Abraham Lincoln and the Civil War. Psychologists chase down sleep demons. UNIVERSITY PARK, Pa. -- What do Moby Dick, the Salem witch trials and alien abductions all have in common? They all circle back to sleep paralysis. Less than 8 percent of the general population experiences sleep paralysis, but it is more frequent in two groups -- students and psychiatric patients -- according to a new study by psychologists at Penn State and the University of Pennsylvania.
Sleep paralysis is defined as "a discrete period of time during which voluntary muscle movement is inhibited, yet ocular and respiratory movements are intact," the researchers state in the current issue of Sleep Medicine Reviews. Hallucinations may also be present in these transitions to or from sleep. Alien abductions and incubi and succubi, as well as other demons that attack while people are asleep, are implicated as different cultural interpretations of sleep paralysis. Brian A. He looked at a total of 35 published studies from the past 50 years to find lifetime sleep paralysis rates. Meditation found to increase brain size. Mental calisthenics bulk up some layers By William J.
Cromie Harvard News Office People who meditate grow bigger brains than those who don't. Researchers at Harvard, Yale, and the Massachusetts Institute of Technology have found the first evidence that meditation can alter the physical structure of our brains. Brain scans they conducted reveal that experienced meditators boasted increased thickness in parts of the brain that deal with attention and processing sensory input. In one area of gray matter, the thickening turns out to be more pronounced in older than in younger people. "Our data suggest that meditation practice can promote cortical plasticity in adults in areas important for cognitive and emotional processing and well-being," says Sara Lazar, leader of the study and a psychologist at Harvard Medical School.
The researchers compared brain scans of 20 experienced meditators with those of 15 nonmeditators. Study participants meditated an average of about 40 minutes a day. Sleep-deprived people make risky decisions based on too much optimism | Scie... DURHAM, N.C., and SINGAPORE -- The powers that be in Las Vegas figured out something long before neuroscientists at two Duke University medical schools confirmed their ideas this week: Trying to make decisions while sleep-deprived can lead to a case of optimism. The scientists showed, using a functional MRI, that a night of sleep deprivation leads to increased brain activity in brain regions that assess positive outcomes, while at the same time this deprivation leads to decreased activation in the brain areas that process negative outcomes.
Sleep-deprived individuals in the study tended to make choices that emphasized monetary gain, and were less likely to make choices that reduced loss. While this wasn't true for all of the subjects, the findings are worth heeding. This is the first study to show that sleep deprivation can change the way the brain assesses economic value, independent of its effects on vigilant attention. The study was published by the Journal of Neuroscience on March 8. IT- Download free computer eBooks in pdf. Myth: Eli Whitney invented the cotton gin. - Interesting US History. Americans at War. Intercollegiate Studies Institute - Educating for Liberty. 12 Weird &Interesting Facts About the United States. Academic Earth | Online Courses | Academic Video Lectures.
Introduction to Psychology | Yale Psychology Lecture. Advice, tips and tricks, and resources for the Mechanical PE Exam. The God Particle: If the Universe Is the Answer, What Is the Question? The God Particle may refer to: Science[edit] Higgs Boson, a particle in theoretical physics sometimes referred to as the God Particle.The "God particle" is the nickname of a subatomic particle called the Higgs boson. In layman’s terms, different subatomic particles are responsible for giving matter different properties. One of the most mysterious and important properties is mass. Some particles, like protons and neutrons, have mass.
Others, like photons, do not. The Higgs boson, or “God particle,” is believed to be the particle which gives mass to matter. Media[edit] The Golden Ratio in Flowers. The Golden Ratio in Flowers Posted by ksakz on June 4, 2012 · 8 Comments Leonardo Fibonacci discovered an amazing sequence of numbers that ties nature and mathematics together in fascinating ways. This ratio is thought to exist in nature because its particular growth pattern is the most effective. Adolf Zeisig, a mathematician and philosopher, found the golden ratio in plant stems, veins of leaves, skeletons of animals, chemical compounds and the geometry of crystals. The Fibonacci sequence starts with 1, and each additional number is the sum of the two numbers immediately before it (1+0=1, 1+1=2, 2+1=3, 3+2=5, 5+3=8, 13, 21,34, 89, etc).
Check out some more instances of the Golden Ratio in flowers below! Like this: Like Loading... Building Dynamic Websites | Harvard Video Course. 10 Websites To Make You Think | The Online Learning Blog from Study2U. Supposedly browsing the internet requires more brain power than watching television. Although judging from some of the websites we’ve come across that assumption is cast into doubt. Here’s some of the sites we like that might get your brain to sit up and listen. Ted A conference that started in 1984 bringing together experts in technology, entertainment and design quickly grew into so much more. The conference itself is invitation only, but the website features all the talks at the conference in high res video format.
New Scientist The New Scientist website carries new articles from the magazine as well as the NS archive of over 76,000 pieces. Big Think The Big Think website is a collection of ‘global thought leaders’ who offer their thoughts and analysis on world events and other important developments. Café Scientifque ‘for the price of a cup of coffee or a glass of wine, anyone can come to explore the latest ideas in science and technology’ Breathing Earth Arts & Letters Daily How Stuff Works. SEEDMAGAZINE.COM.
Today I learned something new. — Page 2. Network Simulator: Available Router Labs. Spirit Vaults : Meditation : The Three Parts of Meditation, Scott Taylor. National STEM Centre. CosmoLearning | Your Free Online School: Courses, Video Lectures, Documentaries, Images, Books and more. 45 Things You Can Learn Online for Free! « : Blisstree - Serious Health and Wellness – Injected With Humor. Speed reading pacer. How 10 Popular Brands Got Started. Guy Hottel Part 1 of 1.