Earth's Slowing Rotation Linked to Atmospheric Oxygen Levels

Imagine Earth is a spinning top, and the moon is slowing it down.

Scientists discovered that as Earth spun slower, the days got longer.

These longer days helped tiny oxygen-making creatures called cyanobacteria.

These microbes need time to "wake up" before they can make oxygen.

Longer days gave them more time to produce oxygen.

This is why scientists think the Earth's slow spin helped create the oxygen we breathe.

It's like the slow spin helped make the air cleaner, twice in history.

This research shows how big things like the Earth's spin can affect tiny living things.