MicroRNA is the master regulator of the genome − researchers are learning how to treat disease by harnessing the way it controls genes
- Written by Andrea Kasinski, Associate Professor of Biological Sciences, Purdue University

The Earth formed 4.5 billion years ago, and life less than a billion years after that. Although life as we know it is dependent on four major macromolecules – DNA, RNA, proteins and lipids – only one is thought to have...