"...Not only does DNA store information at a density per unit volume exceeding any other known medium, it can achieve one quarter of the maximum information den

"...Not only does DNA store information at a density per unit volume exceeding any other known medium, it can achieve one quarter of the maximum information density allowed by the laws of physics..." Hmm... That number 1/4 of the Bekenstein bound seems suspicious. A quick search gives: http://www.forbes.com/sites/quora/2013/05/22/can-data-storage-ever-reach-an-absolute-limit/ http://www.forbes.com/sites/quora/2013/05/22/can-data-storag... "A gram of dry DNA is about one cubic centimeter, so the radius is 0.0062 meters. So, the best DNA storage can do with those dimensions is 5.610^15 bits. A Bekenstein-bound storage device with those dimensions would store about 1.610^38 bits." That's 10^22 difference. Not 1/4. That's more like it ... A Bekenstein bound is Plank-level. Around 8mb per something like a volume of an electron. And DNA uses chemical level. Configurations of atoms.