There's an "anti-smartphone" called John's Phone which can only make and receive calls.
7
A toaster uses almost half as much energy as a full-sized oven.
33
Thomas Alva Edison patented almost 1,300 inventions in his lifetime!
144
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
Castor oil is used as a lubricant in jet planes.
-5
More than a billion transistors are manufactured every second.
-25