1) The speed of a sneeze can reach up to 100 miles per hour (160 kilometers per hour).

2) Orchids are one of the largest families of flowering plants, with over 25,000 species.

3) Lightning strikes the Earth about 8 million times a day.

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