Books in a few decades might not be stored in their physical forms, or even in soft copies, but stored in the very molecules that design our body- DNA.
![The four building blocks of DNA, also called bases (shown in green, red, yellow and blue) can be used as effective storage devices. [Image Credit: restlessmindboosters]](http://cdn2.techie-buzz.com/images5/common/2012/08/dna-120x120.jpg)
