1) In Norse mythology, Ragnarok is a cataclysmic event that signifies the end of the world. It involves a series of apocalyptic battles and natural disasters, leading to the destruction of the gods and the world as it is known. From the ashes, a new world and a new generation of gods emerge.

2) The ongoing conflict in Syria, which began in 2011, has resulted in a humanitarian crisis, displacement of millions of people, and international efforts to bring about a resolution and provide aid to those affected.

3) The concept of compound interest can be attributed to the ancient Babylonians, who used it in their banking practices.

4) The world's first speeding ticket was issued in 1902 to a motorist who was driving at the astonishing speed of 45 miles per hour (72 km/h).