This week we're exploring Lyme disease, looking at the science behind the ticks that carry it, the bacteria that cause it, how we treat it, and why the condition is on the rise in the UK. Plus, in the news, can we mix and match COVID vaccines? We've got the results of the latest trial. Also, a new family of beetles discovered fossilised in dinosaur poo, and a pacemaker that dissolves when you're done with it... Like this podcast? Please help us by supporting the Naked Scientists