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Life on Earth Began Three Billion Years Ago
Using a mathematical model of DNA and gene evolution, scientists have tracked the beginning of life on earth to three billion years ago. Click to enlarge this image.
Monty Rakusen/ Getty Images
Life on Earth dramatically surged around three billion years ago, possibly when primitive forms developed more efficient ways to harness energy from sunlight, according to a study published on Sunday in Nature.
The conclusion is made by scientists at the Massachusetts Institute of Technology (MIT), who built a "genomic fossil," in essence a mathematical model that took 1,000 key genes that exist today and calculated how they evolved from the very distant past.
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