Weight loss jab concerns, and crafty bribing caterpillars

In this edition of The Naked Scientists, weight loss jabs being prescribed by GPs in England, but do we know enough about the side effects? Also, a new simple test to replace endoscopies for patients with Barrett's oesophagus. And we hear from one of the engineers at the Vera Rubin Observatory, which is shedding new light on the cosmos... Like this podcast? Please help us by supporting the Naked Scientists