interesting facts found from various sites

1. A photo of the earth has been taken from a distance of 3.7 billion miles.
2. A human being can survive unprotected in space for about two minutes
3. There are really only 23 hours, 56 minutes, and four seconds in a day, not 24 hours.
4. Antarctica has as much ice as the Atlantic Ocean has water.
5. The continents move about 2 cm every year.
   200,000 people are born every day.
   2 people die every second.
6. More than 80% of the earth's surface is volcanic.
7. The Sun is 333,000 times as large as our earth.
8.  Only 11 percent of the earth's surface is used to grow food. .
9. Planet Earth rotates around the Sun at approximately 1000 miles per hour.  
10. Earth doesn’t take 24 hours to rotate on its axis.It’s actually 23 hours, 56 minutes and 4 seconds.  
11. The temperature of the earth's interior increases by 1 degree every 60 feet down. 
12. Mount Everest is the highest mountain on Earth and its peak is 8848 meters above sea level. And amazingly it is gaining height 
13. Seismometer is the device with which earth-quackes is measured.Richter scale shows intensity of earth-quake -that is how strong the waves are on seismometer.
14. The highest recorded temperature on Earth is 136°F (58°C) in Libya in 1922..
15. The lowest recorded temperature on Earth is -128.6°F (-89.6°C) in Antarctica in 1983.
16.  Light from the Sun reaches Earth in around 8 minutes.
17. Do you know that your Toe-prints are also unique , just like your finger prints !And imagine even your tongue print is unique!
18. The human body has enough iron in it to make 3 inches long nail.
19. A human heart pumps enough blood to fill 100 swimming pools in an average lifetime.In the same time it will beat almost three billion times  
20. People generally read 25% slower from a computer screen compared to paper. 
21. Your brain is move active and thinks more at night than during the day. 
22. the tongue is the strongest muscle in the human body. 
23. Your tongue has 3,000 taste buds.
24. An adult human body contains approximately 100 trillion cells!
25. Bones in an adult account for 14% of the body's total weight. 
26. The strongest bone in your body is the femur (thighbone), and it's hollow! 
27. Enamel is hardest substance in the human body. 
28. In one day ,your heart beats 100,000 times. 
29. The normal pulse is 70 heartbeats per minute
30. a woman has approximately 4.5 liters of blood in her body, while men have 5.6 liters
31. People with darker skin will not wrinkle as fast as people with lighter skin. 
32. The only part of the body that has no blood supply is the cornea in the eye. It takes in oxygen directly from the air. 
33. It takes about 20 seconds for a red blood cell to circle the whole body. 
34. Babies are born with pink lungs but they darken in color as we breathe in polluted air. 
35. Your right lung is bigger than left lung! The left lung is small so as to adjust heart in that part !
36. The Hyoid bone, in your throat ,is the only bone in your body which not attached to other bone..
37. The best time for a person to buy shoes is in the afternoon. This is because the foot tends to swell a bit around this time. 
38. A normal human being can survive for 20 days without eating but it can survive only for 2 days without drinking!
39. 14 bones make up the human face.
40. There are 60,000 miles (97,000 km) of blood vessels in each human.
41. A mind-boggling fact:The ear in human body has over 25,000 tiny hair cells to help us hear each and every sound!