do u know???

1. The speed of light is 186,000 miles per second.
Every second around 100 lightning bolts strike the Earth.
Every year lightning kills 1000 people.
If you could drive your car straight up you would arrive in space in just over an hour.
The Earth is 4.56 billion years old. The same age as the Moon and the Sun.
If our Sun were just inch in diameter, the nearest star would be 445 miles away.
The tallest tree ever was an Australian eucalyptus - In 1872 it was measured at 435 feet tall.
In 5 billion years the Sun will run out of fuel and turn into a Red Giant.
Without its lining of mucus your stomach would digest itself.
There are 60,000 miles of blood vessels in the human body.
On the day that Alexander Graham Bell was buried the entire US telephone system was shut down for 1 minute in tribute.
The fastest speed a falling raindrop can hit you is 18mph.
Tuberculosis is the biggest global killer of women.
The highest recorded train speed is 320.2 mph by the TGV train in France.
The highest speed ever achieved on a bicycle is 166.94 mph by Fred Rompelburg.
85. 15% of the world's fresh water flows down the Amazon.
The temperature at the center of the Earth is estimated to be 5500 degrees Celsius.
Neutron stars are so dense that a teaspoonful would weigh more than all the people on Earth.
The Walkman was launched in Japan by Sony in 1979.
A quarter of the world’s plants are threatened with extinction by the year 2010.
Stewardesses" is the longest word that is typed with only the left hand.
The average 21 year old has spent 5,000 hours playing video games, has exchanged 250,000 e-mails, instant and text messages and has spent 10,000 hours on the mobile phone.
• The world's first computer, called the Z1, was invented by Konrad Zuse in 1936. His next invention, the Z2 was finished in 1939 and was the first fully functioning electro-mechanical computer.