A key ingredient of concrete and the foundation of much of modern society, cement production accounts for between 5 to 10 per cent of the world’s total carbon dioxide emissions. Visionary engineer Vivian Tam co-invented Ecobond CO2 concrete, a recycled concrete with the potential to revolutionise building by reducing waste and concrete production emissions.

Vivian Tam is recorded live in conversation with Yaara Bou Melhem at Powerhouse Ultimo. For more information go to 100climateconversations.com/vivian-tam