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

2) The Amazon rainforest produces more than 20% of the world's oxygen.

3) The first commercially available digital camera, the Dycam Model 1, was introduced in 1990 and had a resolution of 376 x 240 pixels.

4) Cricket, originating in England, is a popular sport played in many countries and is known for its distinctive rules and terminology.