The first alarm clock could only ring at 4 a.m.
120
Whale oil was used in automobile transmissions as late as 1973.
56
A small airplane can fly backwards.
75
The cigarette lighter was invented before the match.
210
Kleenex tissues were originally used as filters in gas masks.
46
The blueprint for a floating city has just been approved by the largest port construction and design company in China. It's entirely self-sustainable, and extends underwater.
2
Technically speaking, crystal glass is actually a Liquid that flows very slowly.
43
UFO sightings have reduced by over 80% since the introduction of smartphones and public access to HD video.
2