The confirmation hearings for Donald Trump’s cabinet picks are well under way. There have been fierce exchanges between Marco Rubio and Rex Tillerson, Bernie Sanders and Tom Price, and Elizabeth Warren and Ben Carson. Tillerson has refused to answer questions on climate science from Tim Kaine, while Trump’s pick for education secretary, Betsy DeVos, struggled to answer some of the questions she was asked. But there have been lighter moments amid the serious business, including some hilarious but unintentional innuendo from Rick Perry