1) The deepest part of the ocean is the Mariana Trench, reaching a depth of about 36,070 feet (10,994 meters).

2) The Eiffel Tower can be 15 cm taller during the summer due to thermal expansion.

3) Male seahorses are the ones who give birth to their offspring.

4) The game of rugby originated at Rugby School in England and has since evolved into different versions, including Rugby Union and Rugby League.