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Charles Daney

Blasting Neutrinos Under Wisconsin May Yield Big Payoff - washingtonpost.com - 0 views

www.washingtonpost.com/...AR2009081601835.html

neutrinos particle physics

shared by Charles Daney on 19 Aug 09 - Cached
  • Charles Daney on 19 Aug 09
     
    Scientists are playing an exotic game of pitch and catch between Illinois and Minnesota. Their catcher's mitt is solid iron, weighs 5,500 tons, and is parked in northern Minnesota in an abandoned iron mine. With millions of dollars from the federal stimulus package, construction crews are now bui...
Charles Daney

Model Suggests How Life's Code Emerged From Primordial Soup - 0 views

www.sciencedaily.com/...090829091049.htm

biogenesis

shared by Charles Daney on 06 Sep 09 - Cached
  • Charles Daney on 06 Sep 09
     
    By working with the simplest amino acids and elementary RNAs, physicists led by Rockefeller University's Albert J. Libchaber, head of the Laboratory of Experimental Condensed Matter Physics, have now generated the first theoretical model that shows how a coded genetic system can emerge from an ancestral broth of simple molecules.
Walid Damouny

What scientists know about jewel beetle shimmer - 0 views

www.physorg.com/news167585862.html

PhysOrg.com beetles insects pigment polymer colour light optics imaging

shared by Walid Damouny on 24 Jul 09 - Cached
  • Walid Damouny on 24 Jul 09
     
    "Jewel beetles" are widely known for their glossy external skeletons that appear to change colors as the angle of view changes. now they may be known for something else--providing a blueprint for materials that reflect light rather than absorbing it to produce colors.
Walid Damouny

Professor hatches century-old eggs to study evolution - 0 views

www.physorg.com/news167059896.html

PhysOrg.com biology ecology evolution

shared by Walid Damouny on 18 Jul 09 - Cached
  • Walid Damouny on 18 Jul 09
     
    Suspending a life in time is a theme that normally finds itself in the pages of science fiction, but now such ideas have become a reality in the annals of science.
Walid Damouny

Telomeres resemble DNA fragile sites - 0 views

www.physorg.com/news166442641.html

DNA genetics PhysOrg science Telomeres

shared by Walid Damouny on 10 Jul 09 - Cached
  • Walid Damouny on 10 Jul 09
     
    Telomeres, the repetitive sequences of DNA at the ends of linear chromosomes, have an important function: They protect vulnerable chromosome ends from molecular attack. Researchers at Rockefeller University now show that telomeres have their own weakness. They resemble unstable parts of the genome called fragile sites where DNA replication can stall and go awry. But what keeps our fragile telomeres from falling apart is a protein that ensures the smooth progression of DNA replication to the end of a chromosome.
Charles Daney

Winning the ultimate battle: How humans could end war - science-in-society - 07 July 2009 - New Scientist - 0 views

www.newscientist.com/...-how-humans-could-end-war.html

war

shared by Charles Daney on 19 Aug 09 - Cached
  • Charles Daney on 19 Aug 09
     
    Is warfare really an immutable part of our nature, or is it something we can overcome? Some researchers now suspect the latter
Charles Daney

Genes That Make Us Human -- ScienceNOW - 0 views

sciencenow.sciencemag.org/...2

genetics

shared by Charles Daney on 06 Sep 09 - Cached
  • Charles Daney on 06 Sep 09
     
    Finding genes that have evolved in humans among our genome's 3 billion bases is no easy feat. But now, a team has pinpointed three genes that arose from noncoding DNA and may help make our species unique.
Charles Daney

Remembering Without Knowing It -- Sciencenow - 0 views

sciencenow.sciencemag.org/...4

memory neuroscience

shared by Charles Daney on 13 Sep 09 - Cached
  • Charles Daney on 13 Sep 09
     
    Have a friend remove an object from a room you know well--say, a napkin holder from your kitchen--and then see if you can guess what he's taken away. Even if you don't know the answer, your eyes will unconsciously fixate on the stretch of countertop next to the toaster where the holder usually sits. Remembering what goes where in your kitchen is called relational memory, and now scientists have shown that your unknowing stare may be a sign that your brain remembers even when you don't.
Walid Damouny

Leaves whisper their properties through ultrasound - 0 views

www.physorg.com/news184415874.html

PhysOrg.com leaves ultrasound monitoring analysis water health agriculture

shared by Walid Damouny on 20 Feb 10 - Cached
  • Walid Damouny on 20 Feb 10
     
    "The water content of leaves, their thickness, their density and other properties can now be determined without even having to touch them. A team of researchers from the CSIC Institute of Acoustics and the Agri-Food Research and Technology Centre (CITA) of Aragón has just presented an innovative technique that enables plant leaves to be studied using ultrasound in a quick, simple and non-invasive fashion."
Skeptical Debunker

GPS Jamming Devices Pose Many Threats (w/ Video) - 0 views

www.physorg.com/news186326901.html

GPS jamming device UK Germany

shared by Skeptical Debunker on 25 Feb 10 - Cached
  • GPS jammers send out a radio signal that’s the same frequency as the satellite signal. Since GPS satellite signals are weak, a GPS jamming device that puts out approximately 2 watts is sufficient to disrupt a GPS signal in a vehicle that’s approximately within 10 feet of the device. This leaves the in-vehicle system unable to establish its position and report back to a GPS tracking center, where the vehicle is registered. There are also fears that terrorists can use these devices to disrupt air traffic and cause severe safety and economic damage to the US. More powerful jammers could disrupt GPS signals in close proximity of airports, causing safety concerns. Our military overseas use GPS extensively to record their position as well as the position of the enemy. With GPS jamming devices in the hands of our enemy, U.S. and allied forces can be severely impacted when launching ground and air-strikes.
  • Skeptical Debunker on 25 Feb 10
     
    The latest GPS jamming devices are now being used by car thieves in the UK to render stolen cars and trucks undetectable by law enforcement. These devices also pose a threat to airlines and US military overseas.
Skeptical Debunker

Top home-school texts dismiss Darwin, evolution - Yahoo! News - 1 views

news.yahoo.com/...us_rel_home_school_evolution

home schoolling Christian evolution propoganda

shared by Skeptical Debunker on 07 Mar 10 - Cached
  • Christian-based materials dominate a growing home-school education market that encompasses more than 1.5 million students in the U.S. And for most home-school parents, a Bible-based version of the Earth's creation is exactly what they want. Federal statistics from 2007 show 83 percent of home-schooling parents want to give their children "religious or moral instruction." "The majority of home-schoolers self-identify as evangelical Christians," said Ian Slatter, a spokesman for the Home School Legal Defense Association. "Most home-schoolers will definitely have a sort of creationist component to their home-school program." Those who don't, however, often feel isolated and frustrated from trying to find a textbook that fits their beliefs. Two of the best-selling biology textbooks stack the deck against evolution, said some science educators who reviewed sections of the books at the request of The Associated Press. "I feel fairly strongly about this. These books are promulgating lies to kids," said Jerry Coyne, an ecology and evolution professor at the University of Chicago. The textbook publishers defend their books as well-rounded lessons on evolution and its shortcomings. One of the books doesn't attempt to mask disdain for Darwin and evolutionary science. "Those who do not believe that the Bible is the inspired, inerrant Word of God will find many points in this book puzzling," says the introduction to "Biology: Third Edition" from Bob Jones University Press. "This book was not written for them." The textbook delivers a religious ultimatum to young readers and parents, warning in its "History of Life" chapter that a "Christian worldview ... is the only correct view of reality; anyone who rejects it will not only fail to reach heaven but also fail to see the world as it truly is."
  • Skeptical Debunker on 07 Mar 10
     
    Home-school mom Susan Mule wishes she hadn't taken a friend's advice and tried a textbook from a popular Christian publisher for her 10-year-old's biology lessons. Mule's precocious daughter Elizabeth excels at science and has been studying tarantulas since she was 5. But she watched Elizabeth's excitement turn to confusion when they reached the evolution section of the book from Apologia Educational Ministries, which disputed Charles Darwin's theory. "I thought she was going to have a coronary," Mule said of her daughter, who is now 16 and taking college courses in Houston. "She's like, 'This is not true!'"
  • Skeptical Debunker on 07 Mar 10
     
    Home Fooling.
Walid Damouny

Scientists discover first multicellular life that doesn't need oxygen - 1 views

www.physorg.com/news189836027.html

PhysOrg.com life metazoans anoxic Mediterranean Greece

shared by Walid Damouny on 07 Apr 10 - Cached
  • Walid Damouny on 07 Apr 10
     
    "Oxygen may not be the staple of modern complex life that scientists once thought. Until now, the only life forms known to live exclusively in anoxic conditions were viruses, bacteria and Archaea. But in a new study, scientists have discovered three new multicellular marine species that appear to have never lived in aerobic conditions, and never metabolized oxygen. "
thinkahol *

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

www.newscientist.com/...hiv-whodunnit-continues.html

science

shared by thinkahol * on 19 May 10 - Cached
  • thinkahol * on 19 May 10
     
    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.
  • thinkahol * on 19 May 10
     
    "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

www.sciencedaily.com/...110111213031.htm

More breaks from sitting are good for waistlines and hearts

shared by thinkahol * on 15 Jan 11 - No Cached
  • thinkahol * on 15 Jan 11
     
    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 *

Retracted autism study an 'elaborate fraud,' British journal finds - CNN.com - 1 views

www.cnn.com/...index.html

Retracted autism study an 'elaborate fraud ' British journal finds - CNN.com

shared by thinkahol * on 06 Jan 11 - No Cached
  • thinkahol * on 06 Jan 11
     
    (CNN) -- A now-retracted British study that linked autism to childhood vaccines was an "elaborate fraud" that has done long-lasting damage to public health, a leading medical publication reported Wednesday.
Charles Daney

Some like it hot : Nature News - 0 views

www.nature.com/...news.2010.590.html

biogenesis

shared by Charles Daney on 17 Jan 11 - No Cached
  • Charles Daney on 17 Jan 11
     
    All of which could lend credence to the suggestion of biochemist Lawrence Henderson in 1913 that water is peculiarly favourable to the evolution of life. In the introduction to a 1958 edition of Henderson's book, Wald wrote 'we now believe that life… must arise inevitably wherever it can, given enough time.' But perhaps what it needs is not so much enough time, but the right amount of heat.
Charles Daney

Is it now or never for dark matter WIMPs? - 0 views

arstechnica.com/...ever-for-dark-matter-wimps.ars

dark matter

shared by Charles Daney on 31 Jan 11 - No Cached
  • Charles Daney on 31 Jan 11
     
    For several decades, astronomers and cosmologists have been piling up data that indicates most of the matter in the Universe is dark, interacting only via gravity. As modified theories of gravity failed to account for observation, candidates for dark mater were winnowed down until one remained in favor: the weakly interactive massive particle, or WIMP. Over the past several years, potential signals of WIMPs have appeared in space and on Earth; that, combined with the startup of the LHC, has given the research community the sense that it's close to pinning down the identity of the WIMPs. But a review in this week's Nature considers what might happen if we fail.
thinkahol *

The Loneliest Plant In The World : Krulwich Wonders… : NPR - 1 views

www.npr.org/...e-loneliest-plant-in-the-world

The Loneliest Plant In World : Krulwich Wonders… NPR

shared by thinkahol * on 11 May 11 - No Cached
  • thinkahol * on 11 May 11
     
    When a cycad is ready to reproduce, it grows a large colorful cone, rich with pollen or seed. It signals its readiness by radiating heat or sending out attractive odors to pollinators, who travel back and forth. Once fertilized, the seed-rich cone is ripped apart by hungry seed carriers (who've included over the years, not just birds and insects, but dinosaurs, pterosaurs, bats; these trees have been eaten by just about everybody). But what if you can't find a mate? The tree in London (and its clones that are now growing in botanical gardens all over the world) is a male. It can make pollen. But it can't make the seeds. That requires a female. Researchers have wandered the Ngoya forest and other woods of Africa, looking for an E. woodii that could pair with the one in London. They haven't found a single other specimen. They're still searching. Unless a female exists somewhere, E. woodii will never mate with one of its own. It can be cloned. It can have the occasional fling with a closely related species. Hybrid cycads are sold at plant stores, but those plants aren't the real deal. The tree that sits in London can't produce a true offspring. It sits there, the last in its long line, waiting for a companion that may no longer exist.
thinkahol *

DNA can discern between two quantum states, research shows - 2 views

www.sciencedaily.com/...110331104014.htm

DNA can discern between two quantum states research shows

shared by thinkahol * on 09 Jun 11 - No Cached
  • thinkahol * on 09 Jun 11
     
    ScienceDaily (June 4, 2011) - Do the principles of quantum mechanics apply to biological systems? Until now, says Prof. Ron Naaman of the Institute's Chemical Physics Department (Faculty of Chemistry), both biologists and physicists have considered quantum systems and biological molecules to be like apples and oranges. But research he conducted together with scientists in Germany, which appeared recently in Science, shows that a biological molecule -- DNA -- can discern between quantum states known as spin.
thinkahol *

New MRSA superbug discovered in cows' milk - health - 03 June 2011 - New Scientist - 1 views

www.newscientist.com/...g-discovered-in-cows-milk.html

New MRSA superbug discovered in cows' milk - health 03 June 2011 Scientist

shared by thinkahol * on 13 Jun 11 - No Cached
  • thinkahol * on 13 Jun 11
     
    A new strain of MRSA has been identified in cows' milk and in people, but don't stop drinking milk - the bug is killed off in pasteurisation. However, the strain evades detection by standard tests used by some hospitals to screen for MRSA (methicillin-resistant Staphylococcus aureus), potentially putting people at risk. Laura Garcia Alvarez, then at the University of Cambridge, and colleagues were studying infections in British cows when they discovered antibiotic-resistant bacteria that they thought were MRSA. However, tests failed to identify the samples as any known strains of the superbug. Sequencing the mystery bacteria's genomes revealed a previously unknown strain of MRSA with a different version of a gene called MecA. The new strain was also identified in samples of human MRSA, and is now known to account for about 1 per cent of human MRSA cases.
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