Climate change reducing ocean's carbon dioxide uptake, new analysis shows

ScienceDaily (2011-07-11) -- How deep is the ocean's capacity to buffer against climate change? As one of the planet's largest single carbon absorbers, the ocean takes up roughly one-third of all human carbon emissions, reducing atmospheric carbon dioxide and its associated global changes. But whether the ocean can continue mopping up human-produced carbon at the same rate is still up in the air. In a new analysis, researchers identify a likely source of many of those inconsistencies and provide some of the first observational evidence that climate change is negatively impacting the ocean carbon sink[.....]

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Physicists discover new way to produce antimatter-containing atom

ScienceDaily (2011-07-11) -- Physicists report that they have discovered a new way to create positronium, an exotic and short-lived atom that could help answer what happened to antimatter in the universe,why nature favored matter over antimatter at the universe's creation. The method works at almost any temperature -- including very low temperatures[....]

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Physicists create supernova in a jar

A team of physicists has mimicked a supernova -- an explosion of a star -- in miniature. In a certain type of supernova, the detonation starts with a flame ball buried deep inside a white dwarf. The flame ball is much lighter than its surroundings, so it rises rapidly making a plume topped with an accelerating smoke ring. In their experiment, the researchers created a smaller version of this process by triggering a special chemical reaction in a closed container that generates similar plumes and vortex rings.....

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Dark matter could transfer energy in the Sun

Researchers have studied the effects of the presence of dark matter in the Sun. According to their calculations, low mass dark matter particles could be transferring energy from the core to the external parts of the Sun, which would affect the quantity of neutrinos that reach Earth.[...]

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Zapping Titan-like atmosphere with UV rays creates life precursors

The first experimental evidence showing how atmospheric nitrogen can be incorporated into organic macromolecules is being reported by researchers. The finding indicates what organic molecules might be found on Titan, the moon of Saturn that scientists think is a model for the chemistry of pre-life Earth. Earth and Titan are the only known planetary-sized bodies that have thick, predominantly nitrogen atmospheres.[...]

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