Scientists lit a cave of natural gas on fire in 1971 expecting it to only burn for a few days; it still burns to this day. It has been nicknamed "The Door to Hell".
19
Scientists say that a 'zombie apocalypse' is actually possible based on the recent discovery of certain brain parasites. But as of now, these parasites only affect bugs.
16
There are around 200 frozen corpses on Mount Everest.
696
The human brain doesn't stop developing until about 25 years old.
102