GAMING
The Legend of Zelda: Ocarina of Time (1998) is, on average, the highest rated game and most critically acclaimed of all time. (Sports a critic average score of 99/100 on Metacritic
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Pac-Man, in Maze Games: Pac-Man (1980), was the very first game character to achieve popularity as a character in his own right.
3D Monster Maze (1981), for the ZX81, was the first video game to utilize 3-dimensional graphics. [Some dispute this and say Wolfenstein 3D was the first. While it was one of the very first, it was released later in 1992, long after 3D Monster Maze.]
Half-Life protagonist, Gordon Freeman, is, arguably, the most liked/popular video game protagonist, according to a gamer survey by GameSpot which surveyed several thousand gamers. Gordon Freeman beat 49 other famous characters, such as Mario, Master Chief and Solid Snake, in a majority vote for the title.
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ZOOLOGY
Dolphins sleep with one eye open to stay alert for predators. During this, only one half of the brain sleeps at a time.
One cow gives off approximately four hundred litres of methane through flatulence in one day.
A snail's reproductive organs are located in its head.
By some unknown means, an iguana can end its own life.
There are more insects in ten square feet of a rain forest than there are people in Manhattan.