The Air We Breathe
Our atmosphere is vital to all living things on our planet. How much do you know about the air we breathe?
Answer questions like ...
- How far can air pollution travel from its source?
- For how long do dust and soot generally remain in the air?
- In the 10,000 years before the Industrial Revolution in 1751, carbon dioxide levels in the air rose by less than 10 percent. Since then they’ve risen by: