Coming up, most of Europe smashes June temperature records. But what is the 'heat dome' that's driving this extreme weather? Plus, why HPV vaccine rates are declining despite a huge reduction in cervical cancer deaths; Sonia Shah on her book The Fever: How Malaria Has Ruled Humankind for 500,000 Years; and former Astronomer Royal, Lord Martin Rees, on aliens. Like this podcast? Please help us by supporting the Naked Scientists