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This gas flare in resource-rich Pilbara could not have burned 3.5 billion years ago because Earth lacked oxygen.
Researchers have found fossils of bacteria that are nearly 3.5 billion years old, believed to be the oldest visible fossils ever uncovered.
The fossils, found in northwest Australia’s Pilbara region, are from a time before oxygen existed on Earth and are from just one billion years after Earth’s formation, according to Old Dominion University’s Nora Noffke, one of the researchers who worked on the project.
Wow, older than oxygen on earth.. thats quite a find. ~ophelia