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Butterfly's DNA may alter Ice Age data


Published: July 4, 2007 at 7:32 PM
ROME, July 4 (UPI) -- Discoveries of a butterfly species' DNA in the Far East and Western Europe may rewrite the known history of the Pleistocene Ice Age.

Italian researchers Valerio Sbordoni and Paolo Gratton of the Rome Tor Vergata University said traces of the species' DNA have been found beyond the range once associated with the insect's history, the Italian news agency ANSA said Wednesday.

The Italian duo, along with Polish Academy of Sciences researcher Maciek Konopinski, used the new data to create an updated map of the world's greenery during the global ice age more than 10,000 years ago.

"The evidence from the mitochondrial DNA strongly suggests that large patches of the world's forests survived the impact of the last Ice Age and were alive and well as far back as 150,000 years ago," Sbordoni told ANSA. "There were definitely oases in which the Parnassius mnemosyne butterfly thrived, especially in the Carpathians and the ancient German region of Pannonia."


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GALAXY COLLIDE NASA
This undated NASA image shows two galaxies that are slowly colliding and possibly, in hundreds of millions of years, only one galaxy will remain. Although it is likely that no stars in the two galaxies will directly collide, the gas, dust and ambient magnetic fields do interact directly. These galaxies, part of the vast Hydra-Centaurus supercluster of galaxies, spans over 100 thousand light-years across and is located about 100 million light-years away. (UPI Photo/NASA/ESA/Hubble Heritage)
NASA image shows galaxies that will slowly collide
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