1) The world's oldest tree is believed to be a bristlecone pine named "Methuselah" in California, estimated to be over 4,800 years old.

2) The world's first paper money was created in China over 1,000 years ago.

3) The word "island" contains two vowels: I and A.

4) The ocean covers about 71% of the Earth's surface and contains roughly 97% of the planet's water.