Professor Tim Evans of Middlesex University, in conversation with Simon Rose, looks at the extraordinary U-turns being made in the field of energy, with oil, gas and even coal coming back, leading to amazing new alliances being made and with ramifications that can't yet be foreseen. He discusses the unintended consequences of Putin's invasion of Ukraine, one of which he fears may be to damage the historic reputation of Russia. And he gets excited by the idea of "virtual wards" being trialled by the NHS.