Oil prices surged by 20% before settling up 10% after an attack on a Saudi oil facility. Amena Bakr of Energy Intelligence in Dubai explains what is behind the gyrations. In the face of thousands of lawsuits over its opioid painkillers, Purdue Pharma has filed for Chapter 11 bankruptcy protection. David Armstrong from the news organisation ProPublica discusses the background. Our regular workplace commentator Pilita Clarke considers what employers will do if their workers choose to join what is being billed as a global climate walkout this Friday. Plus our reporter finds out why London is in the middle of a theatre construction boom. (Picture: Damage to the Abqaiq oil facility. Picture credit: US Government.)