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
Sound travels fifteen times faster through steel than through air.
134
No matter how cold it gets, gasoline will not freeze.
107
German chemists made a replica of a trophy the size of one molecule.
68
Aluminum used to be more valuable than gold!
84
Cold water weighs more than hot water.
93
Every day, plants convert sunlight into energy equivalent to six times the entire power consumption of human civilization.
9
Billions of neutrinos pass unnoticed through your body every second.
6