Scientists Emmanuelle Charpentier, 51, and Jennifer Doudna, 56, won the 2020 Nobel Prize for Chemistry for the development of a method for genome editing. They both worked on the discovery of Crispr/Cas9, a powerful gene-editing tool which allows researchers to make precise changes to genes. Only five women have previously won the Nobel prize for Chemistry, despite the award first being handed out in 1901. Crispr-Cas9 has already become one ...