If you are locked in a completely sealed room, you will die of carbon dioxide poisoning first before you will die of oxygen deprivation.
117
One cubic foot of gold weighs more than 1,200 pounds!
78
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
Cold water weighs more than hot water.
93
Scientists are learning from the 1700-year-old Lycurgus Cup, which changes colour thanks to nano particles.
0
Scientists in Germany have developed a candy that doesn't cause cavities.
11
Your brain is 80% water.
525