Electric eels can regenerate their muscles and fins.
Every second the Earth is struck about hundred times by lightning, while four times more lightnings flash in the sky. Lightning can be anywhere from 60 meters to 30 kilometers long.
First western product sold in the Soviet Union was "Pepsi Cola".
The average weight of a male brain is 1450 grams, while the weight of an average female brain is about 1300 grams.
The power of the first lasers was measured by the number of razor blades the laser beams could pass through.
Swallows will fly all day in search of insects and sometimes they will fly more than 800 kilometers.
