Victor Ambros and Gary Ruvkun were awarded the Nobel Prize in Physiology or Medicine on Monday for the discovery of microRNA, which plays a crucial role in determining how organisms develop and function — and how they sometimes malfunction.

The Nobel Prize in Medicine was awarded on Monday to two US scientists for discovering microRNA, a previously unknown type of genetic switch which is hoped can pave the way for new medical breakthroughs.

This isn't the first time RNA has been honored recently. The molecule has been something of a scientific darling of late: last year, Katalin Kariko and Drew Weissman were awarded the Nobel Prize in Physiology or Medicine for their fundamental discovery that made mRNA-based vaccines possible, a development that transformed the COVID-19 pandemic.