Bats turn left when exiting a cave.
I guess they would kill each other having no such synchronisation.
In Korea. There are various styles of chopsticks in different cultures. In Korea, the chopsticks are made of metal, and are paired with a spoon. There are also differences in the eating etiquette.
found at: http://en.globalquiz.org/top-food-facts/
Breslau. The instrument was created by the Weigel family about 1720. Since it resembled the horns played by angels in religious images, it was called engellisches Horn, meaning angelic horn. But engellisch also meant English.
One-eyed and one-handed. Nelson was wounded several times in combat, losing one arm and the sight in one eye. During the Battle of Copenhagen, he refused to retreat, raising the telescope to his blind eye, and saying ‘I really do not see the signal.
Venice. Masks have been a main feature of the Venetian carnival since the 13th century. As masks were also allowed on Ascension and before Christmas, people could spend a large proportion of the year in disguise.
read more: http://en.globalquiz.org/top-history-facts/