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To: longnshort who wrote (8426)	2/7/2012 4:51:32 PM
From: Wharf Rat	Read Replies (1) \| Respond to of 85487

"how come that isn't happening anymore ?" Who is to says it isn't? Might also be happening in the ocean. We're talking primitive single-celled organisms. en.wikipedia.org

To: longnshort who wrote (8426)	2/7/2012 5:12:20 PM
From: mel221	1 Recommendation Read Replies (2) \| Respond to of 85487

>> how come that isn't happening anymore ? Most likely it isn't happening anymore because the environment now is significantly different. The early organisms produced oxygen as a waste product and were very successful. So much so, they changed the planet's atmosphere from 0% oxygen content to todays 20% oxygen content. Oxygen is highly reactive and may interfere with some of the initial ingredients. Also, single cell life is so abundant on the planet today they consume all available resources in the struggle for life. Raw materials for initial life are consumed before they can be concentrated. 4 billion years is a lot of time with which to erase the earliest mechanisms of life. But science will figure this out, probably within the next 100 years. Single cellular life is just a very specific chemical reaction. It won't be long before single cell organisms can be created with a high school chemistry set.