A fully loaded supertanker traveling at normal speed takes a least twenty minutes to stop.
27
The cigarette lighter was invented before the match.
210
It would take twenty new mid-size cars to generate the same amount of pollution that a mid-size 1960's car did.
20
More than a billion transistors are manufactured every second.
-25
Scientists in the UK are creating a smartphone app that will enable users to test for STDs.
0
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
The first alarm clock could only ring at 4 a.m.
120