Sony researchers have developed a refrigerator that only opens when you smile.
9
Whale oil was used in automobile transmissions as late as 1973.
56
The ball on top of a flagpole is called a 'truck'.
24
Energy is being wasted if a toaster is left plugged in after use.
21
Henry Ford produced the model T only in black because the black paint available at the time was the fastest to dry.
33
Scientists in the UK are creating a smartphone app that will enable users to test for STDs.
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