1) The push for racial and social justice has led to discussions and actions to address systemic racism, promote inclusivity, and challenge inequalities in various areas, including education, criminal justice, and economic opportunities.

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

3) The world's largest flower is the Rafflesia arnoldii, which can grow up to 3 feet (1 meter) in diameter and weighs about 15 pounds (7 kilograms).

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