FrequencyCast UK Show 113: Drones, Unsending emails and sun exposure monitoring

For Show 113, Kelly and Pete talk about drones: how Amazon could be using them to deliver, and when things go wrong. We also look and Undo Send, the coke bottle challenge and a device to monitor dangerous sun exposure. Plus your comments on smart meters and BBC radio. Details at https://www.frequencycast.co.uk/cast113.html