An airplane mechanic invented Slinky while he was playing with engine parts and realized the possible secondary use for the springs.
12
Scientists in China have built a prototype high-speed maglev train that is theoretically capable of reaching speeds of up to 1,800 mph (2,900 km/h).
1
A car operates at maximum economy, gas-wise, at speeds between 25 and 35 miles per hour.
-4
There's an "anti-smartphone" called John's Phone which can only make and receive calls.
7
Scientists in the UK are creating a smartphone app that will enable users to test for STDs.
0
There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
10
More than a billion transistors are manufactured every second.
-25
Any modern jet is capable of breaking the sound barrier.
34