Engineers showcase new technologies to help women return to work after maternity leave - but why is the engineering profession itself so male-dominated?

Jane Wakefield attends a breast pump hackathon at MIT, speaking to businesses venture capitalists and campaigners such as Catherine D'Ignazio from Make The Breast Pump Not Suck. Jane also hears from engineers Emma Booth of Black & Veatch and Isobel Byrne Hill of ARUP about their experiences of returning to a very male-dominated industry after the birth of their own children, and the importance of networks such as The Women's Engineering Society.

(Picture: Woman holds up smart breast pumps; Credit: Frederic J. Brown/AFP/Getty Images)