Part-9 Did you knowthere is no sound in space Did you knowMars appears red because it's covered in rust Did you knowtennis was originally played with bare hands Did you knowthe Olympic flag was designed in 1913 Did you knowa bowling pin will fall at a tilt of 7.5 degrees Did you knowthere are 31,536,000 seconds in a year Did you knowa piece of paper cannot be folded more than 7 times Did you knowthe opposite sides of a dice always adds up to 7 Did you knowVHS stands for Video Home System Did you knowthe WD in WD-40 stands for Water Displacer Did you knowthe electric toothbrush was invented in 1939 Did you knowPorsche also builds tractors Did you knowthe Eiffel Tower has 1,792 steps Did you knowIsaac Newton invented the cat door Did you knowthe Titanic was built in Belfast Did you knowBuckingham Palace has over 600 rooms Did you knowHawaii was originally called the Sandwich Islands Did you knowNew York was the first capital of the United States Did you knowAmericans eat 35,000 tons of pasta a year Did you knowHawaii is the only US state that grows coffee Sources from internet Engr.Sulthan