1) The world's largest particle accelerator, the Large Hadron Collider, is located near Geneva, Switzerland, and spans a circumference of 17 miles (27 kilometers).

2) The largest living structure on Earth is the Great Barrier Reef, spanning over 2,300 kilometers (1,400 miles) along the coast of Australia.

3) The world's largest ocean, the Pacific Ocean, covers an area of approximately 63 million square miles.

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