13/12/2012

Team solves mystery associated with DNA repair

Every time a human or bacterial cell divides it first must copy its DNA. Specialized proteins unzip the intertwined DNA strands while others follow and build new strands, using the originals as templates. Whenever these proteins ...

Using light to remotely trigger biochemical reactions

(Phys.org)—Since Edison's first bulb, heat has been a mostly undesirable byproduct of light. Now researchers at Rice University are turning light into heat at the point of need, on the nanoscale, to trigger biochemical ...

Common physics among black holes

(Phys.org)—Black holes range from modest objects formed when individual stars end their lives to behemoths billions of times more massive that rule the centers of galaxies. A new study using data from NASA's Swift satellite ...

Google users must now be more explicit to find porn

US Google users on the prowl for erotic images needed to be more explicit on Thursday after the search engine was tuned to avoid delivering porn in results for "ambiguous" queries such as "boobs."

Alcohol constrains physical constant in the early universe

(Phys.org)—Radio-astronomical observations of a distant galaxy indicate that the ratio of the proton's mass to that of the electron has hardly changed over cosmic history. This fundamental constant of nature has changed ...

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