A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
140
Only 12,000 years ago there was a species closely related to modern humans called Homo floresiensis that had been living on an Indonesian Island. They used fire and rather advanced tools, yet were only about 3 feet tall and weighed around 25kg.
15
The University of Oxford (teaching since 1096) predates the Aztec empire (1428 - 1521).
14
Some people have a "natural alarm clock" allowing them to wake up when they want. This is actually caused by a burst of the stress hormone adrenocorticotropin.
15