1) The Treaty of Versailles, signed in 1919, officially ended World War I and imposed heavy penalties and reparations on Germany.

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

3) The Tour de France, first held in 1903, is one of the most prestigious and grueling cycling races, covering over 3,500 kilometers (2,200 miles) in three weeks.

4) A newborn kangaroo is about 1 inch (2.5 centimeters) long and weighs less than a gram.