Brian Cox and Robin Ince transport their infinite cage to the more finite proportions of London's Science Museum to discuss wonder in science, and why children seem to have it, but too many of us lose it as adults. Joining them on stage are comedian Josie Long, US astrophysicist and science communicator Neil deGrasse Tyson, Director of the Science Museum Ian Blatchford and author and historian Richard Holmes. There's also a special performance by comedian and rap artist Doc Brown, in tribute to his childhood hero.