1) The largest insurance market in the world is Lloyd's of London, which is not an insurance company but a market where insurance brokers and underwriters come together.

2) A newborn kangaroo is about 1 inch (2.5 centimeters) long and weighs less than a gram.

3) The first successful human heart transplant was performed by Dr. Christiaan Barnard in 1967.

4) The word "elephant" contains three vowels: E, A, and E.