1) The Northern Lights, also known as the Aurora Borealis, are natural light displays that occur in the polar regions due to interactions between the Earth's magnetic field and solar particles.

2) The national flower of Japan is the cherry blossom, which holds great cultural significance and is celebrated during the annual cherry blossom festivals.

3) The Pacific Ocean is the largest ocean on Earth, covering more than 30% of the planet's surface.

4) The first recorded car accident occurred in 1891 in Ohio.