WEF 2019: Can technology feed Africa's growing food needs?

Food security and food technology are major Fourth Industrial Revolution buzzwords - and not just because we need to find new ways to sustain ourselves and the planet. There are brilliant ways technology and innovation are taking us forward - and Leah Bessa is at the forefront of these. She’s making insect ice-cream, and she swears it’s delicious. She chats to Gareth Cliff about her business Gourmet Grubb, and food science in the 21st Century.