The Library of Smells

The team re-visits the Cambodian temple complex of Angkor Wat to see how the people affected by the pause in tourism are recovering, now that borders have reopened. Christa Larwood's in Amsterdam to meet the scientists working on a library of historic smells that could transform how we experience museums; and we're at a Thai prison that's allowing tourists in, as part of a project to help rehabilitate its inmates.