1. In spring, Monarch butterflies begin their long journey back to the United States after spending the winter in Mexico. 
2. . In the North Pole, the spring season means six months of uninterrupted sunlight. However, in the South Pole, spring brings six months of constant darkness.
 3. Every Spring in Australia (when the northern hemisphere is experiencing autumn), a unique cloud formation called Morning Glory clouds appear. 

4. In Japan, the arrival of spring is signalled by the blooming of sakura, Japan’s national flower. When this occurs, they will celebrate Hanami by sitting beneath a sakura tree and having a picnic.

5. In Denmark, more than a million starlings gather into a single flock. Together, they create amazing, awe-inspiring shapes in the sky. The phenomenon is called sort sol (Danish for “black sun)