Alexander Graham Bell, the inventor of the telephone, never telephoned His wife or mother because they were both deaf.

Earth travels through space at 66,700 miles per hour.

The Persian Gulf is the warmest sea. In the summer its temperature reaches 35.6 degrees centigrade.

You grow by about 8mm (O.3in) every night when you are asleep, but shrink to your former height the following day.

Tiger shark embryos fight each other in their mother’s womb. The survivor is born.

From a distance, Earth would be the brightest of the 9 planets. This is because sunlight is reflected by the planet’s water.

Longest officially recognized place name is Taumatawhakatangihangakoauauotamateapokaiwhenuakitanatahu, has 85 letters. It’s the name for a hill, 305 metres (1,000 ft) high, close to Porangahau, New Zealand.

The world’s deadliest recorded earthquake occurred in 1557 in central China, more than 830,000 people were killed.

Asia Continent is covered 30% of the total earth land area, but represent 60% of the world’s population.

Bone is five times stronger than steel.