Nigeria: Meet one of the country's first female borehole engineers
Mariam Ibrahim, one of the few woman borehole engineers in north-east Nigeria, has built over 200 boreholes and aims to repair 10,000 more.
In a male-dominated field, she challenges stereotypes, wand wants to inspire women to join her cause for clean water in their community.
Produced by Andrew Gift, Foluke Ogunbayo and Soo Min Kim