1) The word "telephone" contains five vowels: E, E, O, E, and E.

2) The strongest natural material known to man is spider silk. It is stronger than steel and more flexible than nylon.

3) The novel "To Kill a Mockingbird" by Harper Lee has been translated into more than 40 languages and has sold over 40 million copies worldwide.

4) The world's first insurance policy was issued in 1347 in Genoa, Italy. It insured against the risk of maritime trade.