On Saturday, the UN held its International Day for Women and Girls in Science, a day intended to bridge the gap between the number of men and women working across the scientific sectors. Despite efforts in the industry, the gender imbalance persists, especially as workers reach their thirties. To find out more, Sara Macham spoke to Dr Claire Sharpe, consultant nephrologist at King's College London and ambassador of Kidney Research UK's Women and Girls in Science campaign.