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Da Vinci's achievements in the arts

1. 
   made it unnecessary for him to work in science
   
2. 
   prevented people from taking his medical achievements seriously
   
3. 
   demonstrate only one of his many and varied talents
   
4. 
   helped him finance his revolutionary work in aeronautics
   
5. 
   were of a higher quality than his work in the field of physics
   

2. 
   In the field of aeronautics, da Vinci
   

1. 
   was the first man to construct a working airplane or helicopter
   
2. 
   built the first working models of machines used for human flight
   
3. 
   developed a couple of flying machines, but they were far from perfect
   
4. 
   designed flying machines centuries before anyone actually built them
   
5. 
   used his artistic talents to make some of the most beautiful planes ever
   

3. 
   Da Vinci's work on human anatomy.
   

1. 
   allowed for great advancement in the field of medicine
   
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   provided illustrations still used by doctors in the 20th century
   
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   were important because they were done during the Renaissance
   
4. 
   came from his desire to paint people with greater accuracy
   
5. 
   increased the importance of drawing in the scientific process
   

103 WITHOUT A TRACE
When a catastrophe strikes a ship at sea and she goes to the bottom, there is usually some clue to her fate - a bit of debris or perhaps a floating life jacket. Five years after her sinking, a life jacket from the Lusitania was found, for example, floating along a wharf in Philadelphia - thousands of miles from where the ship went down in 1915. But in the case of the British freighter Waratah, and that of the US Navy collier Cyclops, no clues have ever been brought forward. The 16,800-ton Waratah, only a year old, was last sighted off the coast of South Africa in 1909. The ship had been described by some as top-heavy and may have flipped over in heavy seas; with her vanished 211 people. Equally mystifying is the disappearance of the Cyclops, a 19,000-ton ship with 309 people aboard, about seven months before the end of World War I. She was last heard from in March 1918 while en route to Baltimore from the West Indies. Since no logical explanation has ever been offered for her disappearance, the US Navy file on the Cyclops has never been closed.

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