Science Forums 2

[Little Bang]

I had a rather interesting discussion about climate change with some friends this past weekend. One of them is a really nice person, not an exceptional thinker but not stupid. He said something that probably most average Joe's on the street think. He said, " I just can't believe that little O'l piss ant humans can change this huge atmosphere? ", I relied, " Dave did you know that approximately 3.5 to 4 billion years ago our atmosphere was about 50% nitrogen and 50% carbon dioxide. It was about three times as dense as it is today with the temperature some where just below the boiling point of water. Then a little organism showed up that you need a microscope to see and it changed the atmosphere to what we see today. " My figures are probably not accurate but the story got the point across to him.

It took those organisms several billion years to make the changes to today. Each human on this planet is changing the atmosphere a billion times faster than those organisms. The joe's on the street are the one's who have to make the required changes if we are to save life on the Earth as we know it.