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Andrew Mountbatten-Windsor has been arrested on suspicion of misconduct in public office by police investigating his dealings with Jeffrey Epstein. Six unmarked police cars carrying plainclothes officers arrived at the Sandringham estate while the former prince was celebrating his 66th birthday on Thursday. Officers searched the Norfolk property as well as Mountbatten-Windsor’s former home at the Royal Lodge in Great Windsor Park. Lucy Hough speaks to the Guardian journalist David Pegg

For many Australians, the only chance they will have at owning a home will come in the form of tragedy. House prices have become so expensive that Australians are increasingly relying not just on the bank of mum and dad, but on the inheritance that comes with their death to get a foot on the housing ladder. Over the next 20 years, it’s expected $5.4tn will be passed down from baby boomers to their beneficiaries. But experts warn that this great intergenerational wealth transfer presents one of the biggest challenges the country has faced in decades. Reged Ahmad speaks with deputy features editor Celina Ribeiro about how the age of inheritance is threatening economic equality, faith in the ‘fair go’, and even in democracy itself

A group of 34 Australian women and children have been forced to return to a detention camp after attempting to flee Syria for their homeland. Reged Ahmad speaks to senior reporter and former foreign correspondent Ben Doherty about the fierce debate over their repatriation and what it means to be an Australian citizen

Extreme heat is already the most common cause of weather-related hospitalisations in Australia and with heatwaves intensifying, our climate and environment correspondent Graham Readfearn put his body to the test in an experiment. In a climate chamber at the University of Sydney, he walked on a treadmill while temperature conditions were constantly adjusted, adding direct sunlight and higher humidity. Graham joins Nour Haydar to talk about how extreme heat affects us, our cognitive functions and our chances of survival

Barack Obama has caused a frenzy after saying he thinks aliens are real during a podcast interview. The former US president was forced to release a statement clarifying he had not seen any evidence of extraterrestrials. There is a long-running conspiracy theory claiming the US government is hiding extraterrestrials at Area 51, a highly classified air force site in Nevada. Lucy Hough speaks to the host of the Guardian’s Science Weekly podcast, Madeleine Finlay