One of the strangest implications of Relativity is the concept of time dilation; how people moving at different speeds will experience different amounts of time.

One of the strangest implications of Relativity is the concept of time dilation; how people moving at different speeds will experience different amounts of time.
Fraser Cain explains why we have seasons. Why is it warm in the summer and cold in the winter? It all happens because of the tilt of the Earth’s axis.