BBC Earth (Asia) - - Science -

A team at the Mas­sachusetts In­sti­tute of Tech­nol­ogy has de­vel­oped a tool to make bac­te­ria act as ‘ge­netic tape recorders’, writ­ing in­for­ma­tion into their DNA about sim­ple events they have ex­pe­ri­enced. The bac­te­ria can be pro­grammed to cre­ate a new sec­tion of DNA when ex­posed to, say, a cer­tain chem­i­cal or light. Re­searchers can then ‘read’ the DNA later to find out about what the bac­te­ria ex­pe­ri­enced. If pop­u­la­tions of bil­lions of bac­te­ria are used, the ef­fect adds up to cre­ate an ana­logue or­ganic ‘hard drive’ of sorts, they say.

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