microrobert
07-24-2013, 12:57 PM
Ancient Greening of Earth Pushed Back to 2.2 Billion Years Ago
http://images.scienceworldreport.com/data/images/full/5312/ancient-fossil.jpg?w=680
After finding an ancient fossil, scientists have discovered that the greening of Earth may have occurred as early as 2.2 billion years ago, which is almost halfway back to the inception of our planet. (Photo : University of Oregon)
Billions of years ago, our planet was barren and lifeless, containing an atmosphere that was far different than the one that is present today. In fact, scientists once believed that it was only about 500 million years ago that plants and life began to slowly emerge. Now, though, that date has been pushed back--far back. Researchers have discovered that the greening of Earth may have occurred as early as 2.2 billion years ago, which is almost halfway back to the inception of our planet.
Ancient Greening of Earth Pushed Back to 2.2 Billion Years Ago (http://www.scienceworldreport.com/articles/8324/20130723/ancient-greening-earth-pushed-back-2-billion-years-ago.htm)
http://images.scienceworldreport.com/data/images/full/5312/ancient-fossil.jpg?w=680
After finding an ancient fossil, scientists have discovered that the greening of Earth may have occurred as early as 2.2 billion years ago, which is almost halfway back to the inception of our planet. (Photo : University of Oregon)
Billions of years ago, our planet was barren and lifeless, containing an atmosphere that was far different than the one that is present today. In fact, scientists once believed that it was only about 500 million years ago that plants and life began to slowly emerge. Now, though, that date has been pushed back--far back. Researchers have discovered that the greening of Earth may have occurred as early as 2.2 billion years ago, which is almost halfway back to the inception of our planet.
Ancient Greening of Earth Pushed Back to 2.2 Billion Years Ago (http://www.scienceworldreport.com/articles/8324/20130723/ancient-greening-earth-pushed-back-2-billion-years-ago.htm)