Why might cataract surgery affect biometric logins?

Thanks to University of Cambridge's Ben Allanach for the answer! Like this podcast? Please help us by supporting the Naked Scientists

Steve has written in to us to ask whether the order in which one eats their food makes a difference to whether or not they experience glucose spikes. We thought this was an interesting question for Cambridge Professor Giles Yeo to sink his teeth into... Like this podcast? Please help us by supporting the Naked Scientists

Thanks to Andrew Bremner for the answer! Like this podcast? Please help us by supporting the Naked Scientists

Thanks to Ems Lord for the answer! Like this podcast? Please help us by supporting the Naked Scientists

Thanks to Dr John Bissell for the answer! Like this podcast? Please help us by supporting the Naked Scientists

Thanks to Rod Mitchell for the answer! Like this podcast? Please help us by supporting the Naked Scientists

Will Tingle takes on this head scratcher from listener David with the help of Professor Adam Taylor of the University of Lancaster... Like this podcast? Please help us by supporting the Naked Scientists

Thanks to UCL's Mark Maslin for the answer! Like this podcast? Please help us by supporting the Naked Scientists

For this Question of the Week, Lotus wants to know whether wearing mirrors could help us keep cool in the sun. James Tytko took on the challenge of answering... Like this podcast? Please help us by supporting the Naked Scientists

Thanks to Michael Reiss for the answer! Like this podcast? Please help us by supporting the Naked Scientists