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Charles Daney

Ten things we don't understand about humans - New Scientist - 0 views

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    We belong to a remarkably quirky species. Despite our best efforts, some of our strangest foibles still defy explanation. But as science probes deeper into these eccentricities, it is becoming clear that behaviours and attributes that seem frivolous at first glance often go to the heart of what it means to be human.
Charles Daney

Galaxies That Go The Distance / Science News - 0 views

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    Just days after NASA released the first cosmic dreamscapes taken by the newly refurbished Hubble Space Telescope three teams of astronomers have used the rejuvenated observatory to find what appears to be a bounty of the most distant galaxies known.
Charles Daney

Is String Theory an Unphysical Pile of Garbage? : Starts With A Bang - 0 views

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    A central point to understanding string theory is that it cannot be formulated the way all other fundamental theories are, by giving the dynamical variables and the equations they obey. We do not know what the fundamental dynamical variables of string theory are, nor the equations they obey.
Charles Daney

Dark Matter Part I: How Much Matter is There? : Starts With A Bang - 0 views

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    As someone who's researched dark matter extensively, it is my determination that dark matter most likely exists, although explaining exactly what it is is a challenge. Over this next series, I would like to lead you through the evidence, observations and discoveries that have led me to this conclusion, and I hope that I explain this well enough that it leads you to draw the same ones for yourself.
Charles Daney

Dark Matter Part II: How much Normal Matter is there? : Starts With A Bang - 0 views

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    We got the same measurement no matter which method we used, finding out that 25-30% of the total energy of the Universe is in some type of matter. But, only about 0.5% of the total energy is in stars, which means that nearly all of this matter doesn't give off light! So what is the rest of this matter?
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 *

Why your brain flips over visual illusions - life - 03 September 2010 - New Scientist - 0 views

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    What happens in your brain when you view illusions in which two separate images can be seen?
Maluvia Haseltine

Electron Beams Whip Up A Quantum Tornado - 0 views

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    "A group of researchers have developed what are known as vortex beams - rotating electron beams - which make it possible to investigate the magnetic properties of materials and in the future it may be possible to manipulate the tiniest components in a targeted manner and set them in rotation also."
thinkahol *

Curious mathematical law is rife in nature - physics-math - 14 October 2010 - New Scien... - 0 views

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    WHAT do earthquakes, spinning stellar remnants, bright space objects and a host of other natural phenomena have in common? Some of their properties conform to a curious and little known mathematical law, which could now find new uses.
thinkahol *

Lies, Damned Lies, and Medical Science - Magazine - The Atlantic - 0 views

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    Much of what medical researchers conclude in their studies is misleading, exaggerated, or flat-out wrong. So why are doctors-to a striking extent-still drawing upon misinformation in their everyday practice? Dr. John Ioannidis has spent his career challenging his peers by exposing their bad science. 
Ilmar Tehnas

Our world may be a giant hologram - space - 15 January 2009 - New Scientist - 3 views

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    Amazing what can be made from a bit of background noise in the GEO600 with a bit of imagination (or desire). Intriguing article from 12 months ago. No new information since....
anonymous

The Job Of A Mud Engineer On An Oil Rig - 0 views

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    What a mud engineer does on an oil rig.
Mike Chelen

RNA world easier to make : Nature News - 0 views

  • John Sutherland and his colleagues from the University of Manchester, UK
  • ribonucleotide
  • building block of RNA
  • ...29 more annotations...
  • Donna Blackmond, a chemist at Imperial College London.
  • strong evidence for the RNA world
  • 'RNA world' hypothesis, which suggests that life began when RNA, a polymer related to DNA that can duplicate itself and catalyse reactions
  • chemists had thought the subunits would probably assemble themselves first, then join to form a ribonucleotide
  • three distinct parts: a ribose sugar, a phosphate group and a base
  • RNA polymer is a string of ribonucleotides
  • efforts to connect ribose and base together have met with frustrating failure
  • researchers have now managed to synthesise
  • ribonucleotides
  • remedy is to avoid producing separate ribose-sugar and base subunits
  • makes a molecule whose scaffolding contains a bond that will
  • be the key ribose-base connection
  • atoms are then added around this skeleton
  • final connection is to add a phosphate group
  • influences the entire synthesis
  • acting as a catalyst, it guides small organic molecules into making the right connections
  • What we have ended up with is molecular choreography
  • objectors to the RNA-world theory say the RNA molecule as a whole is too complex to be created using early-Earth geochemistry
  • flaw is in the logic — that this experimental control by researchers in a modern laboratory could have been available on the early Earth
  • Robert Shapiro, a chemist at New York University
  • early-Earth scenarios
  • heating molecules in water, evaporating them and irradiating them with ultraviolet light
  • results showing that they can string nucleotides together
  • ultimate goal is to get a living system (RNA) emerging from a one-pot experiment
  • need to know what the constraints on the conditions are first
  • Shapiro sides with
  • another theory of life's origins
  • because RNA is too complex to emerge from small molecules, simpler metabolic processes
  • eventually catalysed the formation of RNA and DNA
anonymous

Mind Opening Philosophy Article On Reality | Infopirate.org - 0 views

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    Mind opening essay on what reality is.
anonymous

What are The Dangers of Sodium Laureth Sulfate In Shampoo? - 0 views

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    The danger of sodium laureth sulfate in shampoos includes cancer risk.
Walid Damouny

Telomeres resemble DNA fragile sites - 0 views

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    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

Memristor minds: The future of artificial intelligence - tech - 08 July 2009 - New Scie... - 0 views

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    What connects human intelligence to the unsung cunning of slime moulds? An electric component that no one thought existed, explains Justin Mullins
Charles Daney

BBC - Spaceman: Still waiting to bag the big one - 0 views

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    It was supposed to be the first great scientific discovery of the 21st Century - or so many researchers thought when they rushed down to the bookmakers to place bets at what were deemed at the time to be ludicrously generous odds. The physicists believed that they were close to making the first direct detection of gravitational waves, the ripples in space-time generated by supernovas and coalescing neutron stars.
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