Iron weighs more after it rusts.
16
The storage capacity of human brain exceeds 4 Terrabytes.
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
German chemists made a replica of a trophy the size of one molecule.
68
In Arizona, a solar wind energy tower has been proposed that would generate as much energy as the Hoover Dam.
5
Airports that are at higher altitudes require a longer airstrip due to lower air density.
39
Billions of neutrinos pass unnoticed through your body every second.
6