Did You Know? Season 1 Episode 21

Did you know that;

1. there are over 97,000 km (60,000 miles) of blood vessels in the average person
2. the oldest cockroach fossils are over 280 million years old
3. an astronaut can be up to 2 inches taller returning from space (the cartilage disks in the spine expand in the absence of gravity)
4. cheetahs can accelerate from 0 to 70 km/h (43mp/h) in 3 seconds
5. sun light can penetrate clean ocean water up to a depth of 73m (240 feet)
6. the center of the Sun is approximately 15 million °C (27 million °F)
7. the moon is 27% the size of the Earth
8. hydrogen is the most abundant element in the Universe (75%)
9. If you could drive to the sun at a speed of 88.5 km/h (55 mp/h) it would take around 193 years
10. due to gravitational effects you weigh is slightly less when the moon is directly overhead
11. when hydrogen burns in the air water is formed
12. diamonds are the hardest substance known to man
13. the wristwatch was invented in 1904
14. the dishwasher was invented in 1889
15. the typewriter was invented in 1829
16. October the 10th is national metric day
17. the only letter which doesn't appear in the Periodic Table is j
18. the tentacles of the giant arctic jellyfish can reach 36.6 meters (120 feet)
19. all snakes are carnivorous
20. a soap bubble is 10,000 times thinner than the average human hair
21. the human body creates 2,500,000 new red blood cells every second
22. the average woman will consume over 2.7kg (6 pounds) of lipstick in their lifetime
23. the average person sheds .7kg (1.5 pounds) of skin each year
24. a person produces enough saliva to fill 2 average size swimming pools during their lifetime
25. $30 of raw popcorn translates into $3,000 in sales at movie theaters
26. 40% of Amsterdam commuters get to work by bicycle
27. there are 2 credit cards for every person in the US
28. the winter of 1932 was so cold that Niagara Falls froze over completely

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