Steve Caplin marks, but does not mourn, the end of Google+, due to close in April. He also looks at how you can sample pufferfish sushi without the risk of instant death, a survey helping drive morality to be built into driverless cars, sticking plasters that won't be as painful to remove, a sail for bicycles, an impressive pocket phone stabiliser, a weight loss device, why eating clay might achieve the same result and how some people can access Amazon's Alexa in a very retro way.
