Kate Evans visits a passionate team as they carpet a remote volcanic island in Tonga with poisoned bait, hoping to eradicate rats. What does it take to complete this kind of project, what are the chances of success, and what will it mean for the island’s ecosystems if they manage to remove the...

Melanie Hempe confronted the issue of screen addiction with her own sons. She started Screen Strong to help parents give their kids smartphone free childhoods. She speaks to Jesse.