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Business leaders’ concerns about the environment are here to stay, say experts, as the COP 26 summit to address global warming begins in Glasgow. We speak with one of the richest people in Australia, Dr Andrew Forrest, the chairman and major shareholder of Fortescue Metals Group. The mining magnate is talking up his new business: producing the clean fuel, green hydrogen. He tells us what's behind the pivot, and how big business has a duty to lead the charge towards a climate-friendly future. Economist Michael Hughes tells us that he has noticed a green sea change in investor behaviour, shown by the questions put to company boards. Plus, Ado Campeol, the man known in Italy as the 'father of tiramisu' has died aged 93 .We speak to food writer Lydia Capasso about the origin of the dessert, which was created by accident.

(Image: Prime Minister Scott Morrison tours Fortescue Metals mining operations with CEO Andrew Forrest on April 15, 2021 in Karratha, Western Australia. Photo by Justin Benson-Cooper/The West Australian - Pool/Getty Images)