To celebrate the release of Roma Agrawal's & Katie Hickey's new book 'How Was That Built?', published by Bloomsbury. Roma and illustrator Katie Hickey sit down to chat science, engineering, art and poo.Follow Roma on socials @RomaTheEngineerFollow Katie on socials @KatieHickeyIllustrationOrder your copy here: https://uk.bookshop.org/a/7310/9781526603654