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A model based on global population data spanning the years from 1900 to 2010 has caused a research team to predict the opposite of what Doomsday Prophets of the 1960s and beyond insisted would happen -  the number of people on Earth will stabilize around the middle of the century and perhaps even start to decline. 

The results coincide with the United Nation's downward estimates, which claim that by 2100 Earth's population will be 6.2 billion, if low fertility and birth rate continues on its current path, below the 7 billion we are at now. 

NASA's Hubble Space Telescope has found the farthest supernova so far. Supernova UDS10Wil, nicknamed SN Wilson after American President Woodrow Wilson, exploded more than 10 billion years ago.

SN UDS10Wil is a Type Ia supernovae. These beacons can be used as a yardstick for measuring cosmic distances. One of the debates surrounding Type Ia supernovae is the nature of the fuse that ignites them. This latest discovery adds credence to one of two competing theories of how they explode. Although preliminary, the evidence so far favors the explosive merger of two burned out stars; small, dim, and dense stars known as white dwarfs, the final state for stars like our Sun.

If objects from space kindled life on Earth, how did it happen?

The terrestrial or extra-terrestrial case for important ingredients that led to the building blocks of life is a hot debate. A new paper says that  adenosine triphosphate, similar to what is now found in all living cells and vital for generating the energy that makes something alive, could have been created when meteorites containing phosphorus minerals landed in hot, acidic pools of liquids around volcanoes, which were likely to have been common across the early Earth.

Building on work done by Dominic ffytche et al in 2000, which delineates more than a dozen types of hallucinations, particularly in relation to people with Charles Bonnet syndrome (a condition that causes patients with visual loss to have complex visual hallucinations), a new paper in Brain outlines  case studies of hallucinations of musical notation, and commented on the neural basis of such hallucinations.

While ffytche believes that hallucinations of musical notation are rarer than some other types of visual hallucination, Professor Oliver Sacks M.D. details eight examples of people who have reported experiencing hallucinations of musical notation, including:

Bodily fluids contain lots of information about the health of people, that is why medical doctors routinely have blood and urine analyzed.

But bodily fluids can do more than mark infectious diseases or cancer and organ failure, researchers at ETH Zurich and at the University Hospital Zurich have shown they can take advantage of modern high-resolution analytical methods to provide real-time information on the chemical composition of exhaled breath.

Yes, your breath has an identifiable individual chemical pattern. Call it a a 'breathprint'? 

The first published results from the Alpha Magnetic Spectrometer (AMS) physics experiment on the International Space Station were announced today and though the result is the most precise measurement to date of the ratio of positrons to electrons in cosmic rays, we still have not caught our first glimpse into dark matter.

The AMS experiment, constructed at universities around the world and assembled at the European Organization for Nuclear Research (CERN), is the world's most precise detector of cosmic rays.  It was installed on the Space Station May 19th, 2011 after having been brought into orbit on the last flight of NASA's space shuttle Endeavour. To date it has measured over 30 billion cosmic ray events.