Oxygen existed earlier than previously thought
By REGINA PALATINI | September 18, 2014Somewhere around 2.4 to 2.8 billion years ago life on earth began to produce oxygen, thus giving many aerobic organisms the ability to live on earth ... or did it? While many of the details remain the same, recent research has shown that life first gave rise to oxygen not between two and three billion years ago, but approximately 3.02 billion years ago, disrupting a theory that was long taken for granted. This research was performed by scientists at Trinity College Dublin and Presidency University in Kolkata, India and was published in the most esteemed geology journal, Geology. The researchers discovered that oxygen arose an astounding 60 million years earlier than previously thought, which is quite a significant amount of time given that humans have only existed for 200,000 years.


