Air

1. Benefits

1.1. You can keep Living

1.2. You get essential gasses (oxygen, nitrogen)

1.3. We can breath and function

2. Timeline

2.1. It has always been here

2.2. It is here right now

2.3. It will always be here

3. Long Term Outlook

3.1. If we keep our trees alive, we will have plenty of air

3.2. Unless we pollute to much

4. Locations

4.1. Air is Everywhere

4.2. You can safely go to about 12,000 feet above sea level.

4.3. There is no place air is not.

5. Challenges

5.1. No major problems

5.2. If we deplete our forests, we will run out of air.