美国科学60秒 SSS 2013-01-25

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　　And the pursuit of happiness...

　　The work is published in the Journal Nature.

　　Unlike many forms of information storage,DNA is extremely long-lasting and it does not require constant electric power.Plus,it's tiny-a small cup of DNA can store 100 million hours of high-quality video.

　　But until now,the storage method has faced with two many obstacles:DNA synthetic is expensive and only works for short strings⁵,and decoding⁶ process creates lots of errors.

　　To avoid these problem,British researchers broke a long string of information into many overlapping⁷ short sequences,each tagged with its position in the overall sequence.American collaborators then synthesized short pieces of DNA to match the strings and shipped the material overseas.Finally,researchers reconstructed the digital files with complete accuracy.

　　DNA storage is still very expensive.But the scientists predict advancing technology will lower prices and make their method cost-effective within a decade.

　　Thanks for the minute,for Scientific American 60-second Science.I'm Sophie Bushwick.

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