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Space-age slingshot

Space-age slingshot

Startup hopes to launch satellites using a catapult 
An augmented reality headset and app could aid those who cannot see
Researchers identify vulnerability in hotel room door locks
Can 3-D printing help solve the developing world’s housing problems?

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Cheap new filters produce drinking water free of lead, arsenic, and bacteria
Are cars without mirrors closer than they appear? 
Vehicles of the future may know when you’re having a medical emergency
Uber and NASA team up to develop an airborne taxi system
A tire-maker proposes an airless, biodegradable tire for tomorrow’s cars