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Sam M

Flash Flood Safety Rules and Tips - 0 views

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    Flash floods kill an average of 100 people in the United States every year in both rural areas and in major cities. You should know these flash flood safety rules and tips.
Walid Damouny

Researchers explore link between schizophrenia, cat parasite - 1 views

  • There are unusually low rates of schizophrenia and toxoplasmosis in countries where cats are rare, and unusually high rates in places where eating uncooked meat is customary.
    • Walid Damouny
       
      Something serious
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    "Johns Hopkins University scientists trying to determine why people develop serious mental illness are focusing on an unlikely factor: a common parasite spread by cats."
thinkahol *

Scientists identify DNA that may contribute to each person's uniqueness | KurzweilAI - 0 views

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    Building on a tool that they developed in yeast four years ago, researchers at the Johns Hopkins University School of Medicine scanned the human genome and discovered what they believe is the reason people have such a variety of physical traits and disease risks.
thinkahol *

Collective intelligence in small teams | KurzweilAI - 0 views

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    A new study co-authored by MIT researchers documents the existence of collective intelligence among groups of people who cooperate well, showing that such intelligence extends beyond the cognitive abilities of the groups' individual members, and that the tendency to cooperate effectively is linked to the number of women in a group.
Mark Harding

How to control a herd of humans - science-in-society - 04 February 2009 - New Scientist - 1 views

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    Fresh insights into why we conform to peer pressure could explain how despotic leaders bend people to their will
Charles Daney

Child Psychology: A New Look Inside Babies' Minds - TIME - 0 views

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    In her book 'The Philosophical Baby,' psychologist Alison Gopnik says babies are learning and developing much faster than most people realize
Walid Damouny

Ancient Maya Practiced Forest Conservation -- 3,000 Years Ago - 0 views

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    As published in the July issue of the Journal of Archaeological Science, paleoethnobotanist David Lentz of the University of Cincinnati has concluded that not only did the Maya people practice forest management, but when they abandoned their forest conservation practices it was to the detriment of the entire Maya culture.
Charles Daney

Dark Energy: Still a Puzzle | Cosmic Variance | Discover Magazine - 0 views

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    People should not be afraid of dark energy. Remember that the problem with the cosmological constant isn't that it's mysterious and ill-motivated - it's that it's too small! The naive theoretical prediction is larger than what's required by observation by a factor of 10^120. That's a puzzle, no doubt, but setting it equal to zero doesn't make the puzzle go away - then it's smaller than the theoretical prediction by a factor of infinity.
Skeptical Debunker

Use of DNA evidence is not an open and shut case, professor says - 0 views

  • In his new book, "The Double Helix and the Law of Evidence" (Harvard University Press), Kaye focuses on the intersection of science and law, and emphasizes that DNA evidence is merely information. "There's a popular perception that with DNA, you get results," Kaye said. "You're either guilty or innocent, and the DNA speaks the truth. That goes too far. DNA is a tool. Perhaps in many cases it's open and shut, in other cases it's not. There's ambiguity."
  • One of the book's key themes is that using science in court is hard to do right. "It requires lawyers and judges to understand a lot about the science," Kaye noted. "They don't have to be scientists or technicians, but they do have to know enough to understand what's going on and whether the statements that experts are making are well-founded. The lawyers need to be able to translate that information into a form that a judge or a jury can understand." Kaye also believes that lawyers need to better understand statistics and probability, an area that has traditionally been neglected in law school curricula. His book attempts to close this gap in understanding with several sections on genetic science and probability. The book also contends that scientists, too, have contributed to the false sense of certainty, when they are so often led by either side of one particular case to take an extreme position. Scientists need to approach their role as experts less as partisans and more as defenders of truth. Aiming to be a definitive history of the use of DNA evidence, "The Double Helix and the Law of Evidence" chronicles precedent-setting criminal trials, battles among factions of the scientific community and a multitude of issues with the use of probability and statistics related to DNA. From the Simpson trial to the search for the last Russian Tsar, Kaye tells the story of how DNA science has impacted society. He delves into the history of the application of DNA science and probability within the legal system and depicts its advances and setbacks.
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    Whether used to clinch a guilty verdict or predict the end of a "CSI" episode, DNA evidence has given millions of people a sense of certainty -- but the outcomes of using DNA evidence have often been far from certain, according to David Kaye, Distinguished Professor of Law at Penn State.
Walid Damouny

Free will is an illusion, biologist says - 2 views

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    "When biologist Anthony Cashmore claims that the concept of free will is an illusion, he's not breaking any new ground. At least as far back as the ancient Greeks, people have wondered how humans seem to have the ability to make their own personal decisions in a manner lacking any causal component other than their desire to "will" something. But Cashmore, Professor of Biology at the University of Pennsylvania, says that many biologists today still cling to the idea of free will, and reject the idea that we are simply conscious machines, completely controlled by a combination of our chemistry and external environmental forces."
Skeptical Debunker

New Rocket Engine Could Reach Mars in 40 Days - Yahoo! News - 0 views

  • A mission trajectory study estimated that a VASIMR-powered spacecraft could reach the red planet within 40 days if it had a 200 megawatt power source. That's 1,000 times more power than what the current VASIMR prototype will use, although Ad Astra says that VASIMR can scale up to higher power sources. The real problem rests with current limitations in space power sources. Glover estimates that the Mars mission scenario would need a power source that can produce one kilowatt (kW) of power per kilogram (kg) of mass, or else the spacecraft could never reach the speeds required for a quick trip. Existing power sources fall woefully short of that ideal. Solar panels have a mass to power ratio of 20 kg/kW. The Pentagon's DARPA science lab hopes to develop solar panels that can achieve 7 kg/KW, and stretched lens arrays might reach 3 kg/KW, Glover said. That's good enough for VASIMR to transport cargo around low-Earth orbit and to the moon, but not to fly humans to Mars. Ad Astra sees nuclear power as the likeliest power source for a VASIMR-powered Mars mission, but the nuclear reactor that could do the job remains just a concept on paper. The U.S. only ever launched one nuclear reactor into space back in 1965, and it achieved just 50 kg/kW.
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    Future Mars outposts or colonies may seem more distant than ever with NASA's exploration plans in flux, but the rocket technology that could someday propel a human mission to the red planet in as little as 40 days may already exist. A company founded by former NASA astronaut Franklin Chang-Diaz has been developing a new rocket engine that draws upon electric power and magnetic fields to channel superheated plasma out the back. That stream of plasma generates steady, efficient thrust that uses low amounts of propellant and builds up speed over time. "People have known for a long time, even back in the '50s, that electric propulsion would be needed for serious exploration of Mars," said Tim Glover, director of development at the Ad Astra Rocket Company.
thinkahol *

Short Sharp Science: Smallpox finding prompts HIV 'whodunnit' - 0 views

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    People keep blaming the emergence of HIV on science, or at least medicine. For the longest time this came in the form of the claim that it was all due to contaminated polio vaccine. That turned out to be factually groundless. Now a group of scientists in the US thinks it may all be down to the greatest medical intervention of all: the eradication of smallpox.
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    "A more potentially useful observation about HIV and viruses comes from Jennifer Smith of the University of North Carolina in Chapel Hill and colleagues in the 1 June issue of the Journal of Infectious Diseases, in which they report that men with HPV infection on their penis are nearly twice as likely to catch HIV than men without. They suspect the virus - which causes cervical cancer in women, and genital warts in men and women - attracts lymphocytes to the skin of the penis for HIV to infect, or creates micro-lesions where it can enter. That's good news, because we have a vaccine for HPV that appears to be completely safe. The team calculates that vaccinating men against HPV could prevent as many cases of HIV as more widely hailed circumcision efforts. It just goes to show that vaccination - already one of the biggest success stories of medicine - can continue to throw up unexpected benefits."
thinkahol *

More breaks from sitting are good for waistlines and hearts - 0 views

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    ScienceDaily (Jan. 13, 2011) - It is becoming well accepted that, as well as too little exercise, too much sitting is bad for people's health. Now a new study has found that it is not just the length of time people spend sitting down that can make a difference, but also the number of breaks that they take while sitting at their desk or on their sofa. Plenty of breaks, even if they are as little as one minute, seem to be good for people's hearts and their waistlines.
thinkahol *

YouTube - Sam Harris SALT - 2 views

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    December 9th, 02005 - Sam Harris"The View From The End Of The World"This is an audio only presentation. This talk took place in the Conference Center Golden Gate Room, San Francisco. Quote: With gentle demeanor and tight argument, Sam Harris carried an overflow audience into the core of one of the crucial issues of our time: What makes some religions lethal? How do they employ aggressive irrationality to justify threatening and controlling non-believers as well as believers? What should be our response? Harris began with Christianity. In the US, Christians use irrational arguments about a soul in the 150 cells of a 3-day old human embryo to block stem cell research that might alleviate the suffering of millions. In Africa, Catholic doctrine uses tortured logic to actively discourage the use of condoms in countries ravaged by AIDS. "This is genocidal stupidity," Harris said. Faith trumps rational argument. Common-sense ethical intuition is blinded by religious metaphysics. In the US, 22% of the population are CERTAIN that Jesus is coming back in the next 50 years, and another 22% think that it's likely. The good news of Christ's return, though, can only occur following desperately bad news. Mushroom clouds would be welcomed. "End time thinking," Harris said, "is fundamentally hostile to creating a sustainable future." Harris was particularly critical of religious moderates who give cover to the fundamentalists by not challenging them. The moderates say that all is justified because religion gives people meaning in their life. "But what would they say to a guy who believes there's a diamond the size of a refrigerator buried in his backyard? The guy digs out there every Sunday with his family, cherishing the meaningthe quest gives them." "I've read the books," Harris said. "God is not a moderate." The Bible gives strict instructions to kill various kinds of sinners, and their relatives, and on occasion their entire towns. Yet slavery is challenged nowhere in the New or
Charles Daney

Schizophrenia: The making of a troubled mind : Nature News - 0 views

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    That's how it is with the early flickers of paranoia, confusion, hypersensitivity and hallucination in people who develop schizophrenia. They often emerge exactly when adolescence is throwing the body and brain for a loop, and years before the disease manifests itself fully.
High Syn

The Best Thing Happened to Party People Like Me - 1 views

I really have my doubts when I first heard about herbal highs and legal weed. I said "there is no such thing" but everything changed when I tried Kronic original. True to its promise, it gives the ...

legal weed

started by High Syn on 13 Jun 11 no follow-up yet
thinkahol *

‪Quantum Computers and Parallel Universes‬‏ - YouTube - 0 views

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    Complete video at: http://fora.tv/2009/05/23/Marcus_Chown_in_Conversation_with_Fred_Watson Marcus Chown, author of Quantum Theory Cannot Hurt You: A Guide to the Universe, discusses the mechanics behind quantum computers, explaining that they function by having atoms exist in multiple places at once. He predicts that quantum computers will be produced within 20 years. ----- The two towering achievements of modern physics are quantum theory and Einsteins general theory of relativity. Together, they explain virtually everything about the world in which we live. But almost a century after their advent, most people havent the slightest clue what either is about. Radio astronomer, award-winning writer and broadcaster Marcus Chown talks to fellow stargazer Fred Watson about his book Quantum Theory Cannot Hurt You. - Australian Broadcasting Corporation Marcus Chown is an award-winning writer and broadcaster. Formerly a radio astronomer at the California Institute of Technology, he is now cosmology consultant of the weekly science magazine New Scientist. The Magic Furnace, Marcus' second book, was chosen in Japan as one of the Books of the Year by Asahi Shimbun. In the UK, the Daily Mail called it "a dizzy page-turner with all the narrative devices you'd expect to find in Harry Potter". His latest book is called Quantum Theory Cannot Hurt You.
thinkahol *

Boys reach sexual maturity younger and younger: Phase between being physically but not ... - 0 views

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    ScienceDaily (Aug. 19, 2011) - Boys are maturing physically earlier than ever before. The age of sexual maturity has been decreasing by about 2.5 months each decade at least since the middle of the 18th century. Joshua Goldstein, director of the Max Planck Institute for Demographic Research in Rostock (MPIDR), has used mortality data to demonstrate this trend, which until now was difficult to decipher. What had already been established for girls now seems to also be true for boys: the time period during which young people are sexually mature but socially not yet considered adults is expanding.
Janos Haits

OKFN Notebook | Community Notebook - Post Anything, Anytime - 0 views

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    'Open knowledge' is any content, information or data that people are free to use, re-use and redistribute - without any legal, technological or social restriction. We detail exactly what openness entails in the Open Knowledge Definition.
Charles Daney

Understanding Cancer - Part 1 - 0 views

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    What is cancer? Everyone knows that it is a terrifying disease and has some ideas about a mass of cells that grow uncontrollably but I get the feeling that many people don't quite understand how it actually happens.
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