Ancient diamonds reveal earth's atmosphere hasn't changed for 2.7 billion years
The University of Lorraine in France conducted a study on a sample of black diamonds from Wawa, Ontario, Canada and were surprised at their findings.
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"Acting like time capsules, diamonds can hold a record of the volatile composition of the mantle — and, by extension, the atmosphere — at the time that they formed.
In this way, researchers from the University of Lorraine, France, showed that the atmosphere during the 'Neoarchean' period had a similar volatile makeup as today.
This means that the Earth's atmosphere back then was also rich in those volatiles — like nitrogen and carbon — which are necessary to support life."