Gadgets & Gizmos: Coffee and heart problems, renewing tooth enamel & a voice-controlled electric blanket

Steve Caplin reports that Australian researchers have found that coffee sharply reduces heart problems. Nottingham scientists have produced a gel that can strengthen and rebuild tooth enamel. There's a voice-controlled electric blanket that kills dust mites – only on sale in China. Many UK buses made in China have a kill switch which can be operated remotely. There's advice on how to avoid scams on Black Friday, a new AI e-ink paper reader, an outdoor electric trolley, an expensive "sock" to carry your iphone and an explanation of how Anguilla is getting even richer from having the right domain name. Learn more about your ad choices. Visit podcastchoices.com/adchoices