air

Some days rain falls in a light, calm sweep across the earth. On other days rain falls in a torrential downpour, flooding the ground below. So, what causes this difference?

It's hard to keep our planet pollution-free. Even our clothes are contaminating the planet with all the microfibers they release. New research shows that even wearing clothes releases a significant number of microfibers into the air.

Today on A Moment of Science were going to explain why Earth's air contains oxygen.