Gadgets & Gizmos: 3D house-building spiders, robot dogs for the moon & high-tech white sticks

Steve Caplin marvels at Google's weird Japanese keyboard. Australian engineers think giant spiders could 3D-print buildings. The Chinese are training robot dogs for lunar missions. The sawfly's precise way of cutting plants to lay eggs could be adapted for human surgery. The boss of Instagram denies his app is listening to us. There's a projector for the bedroom ceiling, an expandable cargo bike and a way of converting old loudspeakers to use bluetooth. And Seattle scientists have invented a high-tech white stick to guide the blind. Learn more about your ad choices. Visit podcastchoices.com/adchoices