-- A crocodile can't move its tongue and cannot chew. Its digestive juices are so strong that it can digest a steel nail.

-- Money notes are not made from paper, they are made mostly from a special blend of cotton and linen. In 1932, when a shortage of cash occurred in Tenino, Washington, USA, notes were made out of wood for a brief period.

-- The Grammy Awards were introduced to counter the threat of rock music. In the late 1950s, a group of record executives were alarmed by the explosive success of rock ‘n roll, considering it a threat to "quality" music.

-- Tea is said to have been discovered in 2737 BC by a Chinese emperor when some tea leaves accidentally blew into a pot of boiling water. The tea bag was introduced in 1908 by Thomas Sullivan of New York.

-- Over the last 150 years the average height of people in industrialised nations has increased 10 cm (about 4 inches). In the 19th century, American men were the tallest in the world, averaging 1,71m (5'6"). Today, the average height for American men is 1,75m (5'7"), compared to 1,77 (5'8") for Swedes, and 1,78 (5'8.5") for the Dutch. The tallest nation in the world is the Watusis of Burundi.

-- In 1955 the richest woman in the world was Mrs Hetty Green Wilks, who left an estate of $95 million in a will that was found in a tin box with four pieces of soap. Queen Elizabeth of Britain and Queen Beatrix of the Netherlands count under the 10 wealthiest women in the world.

-- Joseph Niepce developed the world's first photographic image in 1827. Thomas Edison and W K L Dickson introduced the film camera in 1894. But the first projection of an image on a screen was made by a German priest. In 1646, Athanasius Kircher used a candle or oil lamp to project hand-painted images onto a white screen.

- In 1935 a writer named Dudley Nichols refused to accept the Oscar for his movie The Informer because the Writers Guild was on strike against the movie studios. In 1970 George C. Scott refused the Best Actor Oscar for Patton. In 1972 Marlon Brando refused the Oscar for his role in The Godfather.

-- The system of democracy was introduced 2 500 years ago in Athens, Greece. The oldest existing governing body operates in Althing in Iceland. It was established in 930 AD.

-- A person can live without food for about a month, but only about a week without water. If the amount of water in your body is reduced by just 1%, you'll feel thirsty. If it's reduced by 10%, you'll die.

-- According to a study by the Economic Research Service, 27% of all food production in Western nations ends up in garbage cans. Yet, 1,2 billion people are underfed - the same number of people who are overweight.

-- Camels are called "ships of the desert" because of the way they move, not because of their transport capabilities. A Dromedary camel has one hump and a Bactrian camel two humps. The humps are used as fat storage. Thus, an undernourished camel will not have a hump.