What is cryo-electron microscopy, the Nobel prize-winning technique?

The 2017 chemistry laureates were recognised for developing cryo-electron microscopy. But what is it, why is it exciting and where will it take us next?

A trio of scientists share this year's Nobel prize for chemistry: Jacques Dubochet, Joachim Frank and Richard Henderson.

Their win is for work on a technique known as cryo-electron microscopy that has allowed scientists to study biological molecules in unprecedented sharpness, not least the Zika virus and proteins thought to be involved in Alzheimer's disease.